🐾 Senior Dog Health Glossary (1000+ Terms)

Abdomen

The belly area of a dog where digestive organs are located.

Abscess

A pus-filled pocket caused by infection, often after a bite or wound.

Acetaminophen

Human pain reliever toxic to dogs; never safe unless vet-directed.

ACL (Anterior Cruciate Ligament)

A key knee ligament often torn in dogs, leading to lameness.

Acupuncture

Holistic therapy using thin needles to reduce pain and improve healing.

Addison’s Disease

Hormonal disorder where adrenal glands don’t produce enough cortisol.

Adipose Tissue

Fat storage in the body; reduced in senior dogs.

Adjuvant

Substance added to vaccines to improve immune response.

Agility Decline

Natural reduction in speed and movement ability in older dogs.

Aging Coat

Thinning or whitening fur that develops as dogs get older.

Airway Collapse

Weakening of the trachea, common in small senior breeds.

Albumin

Protein in blood; low levels may indicate disease.

Allergen

Substance that triggers allergic reactions in sensitive dogs.

Allergy Testing

Vet test to identify triggers for itching, rashes, or breathing issues.

Alopecia

Partial or complete hair loss.

Alzheimer’s-like Symptoms

Cognitive decline in dogs, also called canine dementia.

Amantadine

Medication sometimes used for chronic pain management.

Amino Acids

Building blocks of protein needed for muscle repair.

Amoxicillin

Broad-spectrum antibiotic prescribed for infections.

Anal Glands

Scent sacs near the anus; may become impacted in seniors.

Anemia

Low red blood cell count, causing weakness and fatigue.

Anesthesia Risk

Increased surgical risk in seniors due to weaker organs.

Angioma

Benign blood vessel growth often seen in older skin.

Ankylosis

Stiffening of a joint from arthritis.

Antibiotic Resistance

Bacteria that no longer respond to certain drugs.

Antibody

Protein the immune system produces to fight disease.

Antihistamine

Drug that helps control itching and allergies.

Anti-inflammatory

Medication or supplement that reduces swelling and pain.

Anxiety

Restlessness, pacing, or whining common in older dogs.

Aorta

The body’s largest artery, carrying blood from the heart.

Aortic Stenosis

Heart valve narrowing that restricts blood flow.

Appetite Loss

A common senior symptom signaling illness or discomfort.

Arrhythmia

Abnormal heart rhythm detected in older dogs.

Arthritis

Degeneration of joints leading to stiffness and pain.

Aspiration Pneumonia

Lung infection from food or liquid entering airways.

Ataxia

Loss of coordination and balance.

Atherosclerosis

Hardening of arteries, rare but possible in aging dogs.

Atopic Dermatitis

Chronic skin allergy often worsened in seniors.

ATP (Adenosine Triphosphate)

Cellular energy source; efficiency decreases with age.

Audiometry

Test to measure hearing ability in dogs.

Autoimmune Disease

Condition where immune system attacks healthy cells.

Autopsy (Necropsy)

Veterinary exam of a deceased dog to determine cause of death.

Axillary Lymph Node

Gland under the front leg that may enlarge with illness.

Azotemia

Elevated kidney waste products in blood, early sign of kidney disease.

Back Pain

Common in seniors from arthritis or spinal disease.

Bacteria

Microorganisms, some harmful, some beneficial in gut health.

Balanced Diet

Proper mix of protein, fat, carbs, vitamins, and minerals.

Bandaging

Wrapping wounds or joints for protection and healing.

Barbiturates

Drugs once used for seizures; rarely prescribed now.

Basal Metabolic Rate

Energy burned at rest, lower in older dogs.

Basophils

White blood cells involved in allergic reactions.

Behavioral Change

Shifts in temperament or habits, often due to age or illness.

Belly Band

Wrap used to manage incontinence in senior male dogs.

Benign Tumor

Non-cancerous growth, common in aging dogs.

Benzodiazepines

Medications used to manage anxiety or seizures.

Beta-Amyloid Plaques

Protein buildup that disrupts cell communication.

Bile Acids

Substances aiding digestion; abnormal levels indicate liver disease.

Biopsy

Taking tissue sample for disease diagnosis.

Bite Inhibition

Learned ability to control bite strength; may weaken with dementia.

Bladder Stone

Mineral buildup in the bladder causing pain and blockage.

Blood Glucose

Sugar level in blood; irregularities signal diabetes.

Blood Pressure

Force of blood in arteries; high BP is common in older dogs.

Blood Urea Nitrogen (BUN)

Kidney function test.

Body Condition Score (BCS)

Scale vets use to measure weight health.

Bone Density

Strength of bones; decreases with age.

Bone Marrow

Tissue that produces blood cells; can weaken in disease.

Borborygmi

Stomach rumbling noises, sometimes from digestive issues.

Brachycephalic

Short-nosed breeds like Pugs; prone to breathing problems.

Brain Atrophy

Shrinking of brain tissue in senior dogs.

Breathlessness

Difficulty breathing, often from heart or lung disease.

Brindle Coat

Stripe-like coat pattern that may fade with age.

Bronchitis

Inflammation of airways leading to coughing.

Bruising

May occur easily in seniors due to thin skin or clotting issues.

Bruxism

Teeth grinding caused by pain or anxiety.

Buildup of Plaque

Dental tartar accumulation leading to gum disease.

Bulla

Large blister or bubble under the skin.

Burns (Thermal)

Heat-related skin injury; slower healing in seniors.

Bursitis

Inflammation of fluid-filled sacs near joints.

C-Section (Cesarean)

Surgical delivery; rare in seniors.

Cachexia

Severe weight loss often linked to chronic disease.

Calcification

Calcium buildup in tissues, common in older joints.

Calcium

Mineral essential for bones, muscles, and nerves.

Calcium Oxalate Stone

Painful urinary tract stones common in older males.

Canine Cognitive Dysfunction (CCD)

Dog dementia; memory loss and confusion.

Canine Influenza

Contagious respiratory infection.

Canine Parvovirus

Deadly virus, less common in seniors but still dangerous.

Capillary Refill Time

Measure of blood flow checked by vets.

Carbohydrates

Energy source; important but should be balanced in diet.

Carcinogen

Substance that causes cancer.

Cardiac Arrest

Sudden heart failure.

Cardiac Cachexia

Weight loss caused by heart disease.

Cardiologist

Vet specializing in heart conditions.

Cardiomyopathy

Heart muscle disease, especially in large breeds.

Carpal Joint

Equivalent of the wrist in dogs.

Cartilage

Flexible tissue that cushions joints.

Cataracts

Cloudiness in the eye lens leading to vision loss.

Catheter

Tube placed to drain fluids or deliver medication.

Cavities (Dental Caries)

Tooth decay, less common in dogs but possible.

Cellulitis

Skin infection under the surface.

Central Nervous System (CNS)

Brain and spinal cord, controls movement and sensation.

Chemotherapy

Cancer treatment using drugs.

Cherry Eye

Prolapsed tear gland in the eye.

Chiropractic Care

Manual therapy to adjust spine and joints.

Chondroitin

Supplement that helps preserve cartilage and joint function.

Chronic Pain

Ongoing discomfort from arthritis, cancer, or injury.

Circulation

Movement of blood through the body.

Cirrhosis

Scarring of the liver that reduces its ability to function.

Claw Bed

Area where the nail attaches to the paw; prone to infection.

Clinical Trial

Study used to test new drugs or treatments in animals.

Clipping

Trimming a dog’s coat or nails.

Clotting Disorder

Condition where blood doesn’t clot properly, leading to bleeding risk.

Cognitive Decline

Memory loss and confusion in older dogs.

Cognitive Dysfunction Syndrome

(CDS) is a progressive neurodegenerative disorder in aging pets, comparable to Alzheimer’s disease or dementia in humans.

Collagen

Protein that supports joints, skin, and tendons.

Colitis

Inflammation of the colon causing diarrhea.

Colostrum

First milk containing antibodies; vital for puppies.

Colostrum Supplement

Sometimes used in seniors to boost immune function.

Coma

State of unconsciousness caused by severe illness or trauma.

Complete Blood Count (CBC)

Standard blood test that measures red and white cells.

Compression Fracture

Break in the spine caused by weakened bones.

Congenital Defect

Birth defect that may worsen with age.

Congestive Heart Failure (CHF)

Fluid buildup from weak heart function.

Conjunctivitis

Inflammation of the eye’s lining; causes redness and discharge.

Constipation

Difficulty passing stool, common in seniors with slow digestion.

Contact Dermatitis

Skin irritation from chemicals or allergens.

Contrast Imaging

Diagnostic imaging enhanced with dyes or tracers.

Cough

Expulsion of air; chronic cough may indicate heart or lung disease.

Cranial Cruciate Ligament (CCL)

Major knee ligament often torn in dogs.

Creatinine

Waste product measured to check kidney function.

Cretinism

Growth disorder caused by thyroid hormone deficiency.

Cruciate Surgery

Surgery to repair torn knee ligaments.

Cryotherapy

Cold treatment used to reduce swelling and pain.

Cyst

Fluid-filled sac under the skin.

Cystitis

Inflammation of the bladder, causing frequent urination.

Cytology

Microscopic exam of cells to diagnose disease.

Cytoplasm

Fluid within cells where many functions occur.

Degenerative Disc Disease (DDD)

Breakdown of spinal discs causing pain.

Degenerative Joint Disease (DJD)

Progressive arthritis in dogs.

Dehydration

Loss of fluids leading to weakness and sunken eyes.

Dental Calculus

Hardened tartar on teeth.

Dental Prophylaxis

Professional cleaning of a dog’s teeth under anesthesia.

Dental Scaling

Removal of tartar during a cleaning.

Dermatitis

Inflammation of the skin.

Dewclaw

Extra toe higher up the paw; prone to injury.

Diabetes Mellitus

Condition where the body cannot regulate blood sugar.

Diabetic Neuropathy

Nerve damage caused by diabetes.

Diarrhea

Loose stool, often caused by diet or illness.

Dietary Fiber

Plant-based substance that helps regulate digestion.

Dilated Cardiomyopathy (DCM)

Heart condition that weakens pumping ability.

Dilution

Weakening of a substance, such as medications or vaccines.

Diplopia

Double vision, rare but possible in dogs.

Discospondylitis

Spinal infection leading to pain and weakness.

Distemper

Serious viral disease, prevented by vaccines.

Diuretic

Medication that helps remove excess fluid from the body.

Doppler Ultrasound

Imaging tool to measure blood flow.

Dosage

Prescribed amount of medication based on weight.

Doxycycline

Antibiotic often used to treat tick-borne diseases.

Dysbiosis

Imbalance of gut bacteria leading to digestive issues.

Dysphagia

Difficulty swallowing food.

Dyspnea

Difficulty breathing, common in heart and lung disease.

Dystocia

Difficult birthing, rare in senior dogs.

Dystrophy

Abnormal tissue development, often in muscles.

Ear Canal

Passage from the outer ear to the eardrum.

Ear Hematoma

Blood-filled swelling inside the ear flap.

Ear Infection (Otitis)

Common condition, especially in floppy-eared breeds.

Eclampsia

Seizure condition caused by low calcium, usually in nursing mothers.

Edema

Swelling caused by fluid buildup in tissues.

Effusion

Fluid buildup inside body cavities, like chest or abdomen.

Ehrlichiosis

Tick-borne disease that affects blood cells.

Ejaculate

Semen fluid; rarely relevant for seniors but noted in breeding.

Elbow Dysplasia

Developmental joint disorder leading to arthritis.

Electrocardiogram (ECG/EKG)

Heart test that records electrical activity.

Electrolytes

Minerals like sodium and potassium that balance body fluids.

Electromyography (EMG)

Nerve and muscle test.

Emesis

Vomiting, sometimes induced for toxin removal.

Emphysema

Lung disease where air sacs are damaged.

Enalapril

Heart medication classified as an ACE inhibitor.

Encephalitis

Inflammation of the brain causing seizures or confusion.

Endocrine System

Hormone-producing glands such as the thyroid and adrenals.

Endoscope

Flexible tube with a camera used to view internal organs.

Endoscopy

Procedure using an endoscope to inspect the digestive tract.

Endotracheal Tube

Tube placed in the airway during anesthesia.

Energy Needs

Calorie requirements, which decrease with age.

Enlarged Prostate

Common condition in unneutered senior male dogs.

Enrofloxacin

Antibiotic prescribed for bacterial infections.

Enzyme

Protein that speeds up chemical reactions in the body.

Eosinophils

White blood cells linked to allergies and parasites.

Epilepsy

Seizure disorder characterized by recurrent episodes.

Epiphora

Excessive tearing of the eyes.

Epithelium

Tissue lining the skin and internal organs.

Erythrocytes

Red blood cells that carry oxygen.

Erythromycin

Antibiotic sometimes used for skin infections.

Esophagus

Tube that carries food from the mouth to the stomach.

Essential Fatty Acids

Nutrients like Omega-3 and Omega-6 vital for skin and joints.

Estrogen

Female hormone affecting reproduction and bone health.

Euthanasia

Humane ending of a dog’s life to prevent suffering.

Excision

Surgical removal of tissue.

Exocrine Pancreatic Insufficiency (EPI)

Condition where the pancreas cannot produce enough enzymes.

Exercise Intolerance

Reduced ability to walk or play due to age or disease.

Exhalation

Breathing out air from the lungs.

Exocrine Glands

Glands that release secretions such as saliva.

Exudate

Fluid leaking from tissues during inflammation.

Eye Discharge

Watery or thick fluid from the eyes.

Eye Lens

Transparent structure that focuses light for vision.

Eye Pressure (IOP)

Pressure inside the eye; elevated levels cause glaucoma.

Eyelid Tumor

Growth on the eyelid, often benign in older dogs.

Eyelid Warts

Common benign skin growths.

Fading Syndrome

Condition where puppies fail to thrive; in seniors, used metaphorically for gradual decline.

Fainting (Syncope)

Sudden temporary loss of consciousness, often from heart issues.

False Pregnancy

Hormonal condition in unspayed females that may confuse senior owners.

Fascia

Connective tissue covering muscles and organs.

Fatigue

Extreme tiredness common in senior dogs with heart or metabolic disease.

Fatty Tumor (Lipoma)

Benign growth of fat cells, very common in older dogs.

Febrile

Having a fever.

Fecal Exam

Laboratory test of stool to check for parasites or bacteria.

Fecal Incontinence

Loss of bowel control in seniors with nerve damage.

Femur

The thigh bone; fractures heal more slowly in seniors.

Fentanyl Patch

Pain management tool using transdermal opioid delivery.

Fertilization

Egg meeting sperm; rarely relevant in seniors but a veterinary term.

Fiber

Plant matter that supports digestion and stool regularity.

Fibrosis

Thickening of tissue caused by scarring.

Filaria

Parasitic worm that causes heartworm disease.

Fine Motor Skills

Small coordinated movements that may decline with age.

Fistula (Perianal)

Painful tunnel-like sore near the anus, common in German Shepherds.

Flatulence

Excessive gas, often related to diet in seniors.

Fluorescein Stain

Eye test used to detect corneal ulcers.

Fluid Therapy

IV or subcutaneous fluids to rehydrate or support organ function.

Foam Bedding

Orthopedic support surface for arthritic dogs.

Folliculitis

Inflammation of hair follicles causing bumps or sores.

Fomite

Object that spreads disease, such as bowls or toys.

Food Allergy

Immune reaction to proteins like chicken, beef, or dairy.

Food Aggression

Guarding behavior that may worsen with dementia.

Food Bowl Height

Elevated bowls reduce neck strain in arthritic seniors.

Fracture

Broken bone that heals more slowly in older dogs.

Free Radicals

Unstable molecules that damage cells; antioxidants help counter them.

Friction Sore

Pressure sore caused by lying down too much.

Fur Loss

Hair thinning due to hormones, disease, or aging.

Fur Staining

Discoloration around eyes, mouth, or paws.

Gag Reflex

Protective reflex that prevents choking; may weaken with age.

Gait

The way a dog walks; abnormalities often signal arthritis or neurologic disease.

Gallbladder

Organ that stores bile; disease may cause vomiting and abdominal pain.

Gallop Rhythm

Abnormal heart sound associated with heart disease.

Ganglion Cyst

Benign swelling near joints.

Gastric Dilatation-Volvulus (GDV)

Life-threatening stomach twisting condition known as bloat.

Gastritis

Inflammation of the stomach lining.

Gastroenteritis

Inflammation of the stomach and intestines causing vomiting or diarrhea.

Gastrointestinal Tract

The digestive system from mouth to anus.

Gastropexy

Surgical procedure to prevent stomach twisting in at-risk breeds.

Gastrostomy Tube

Feeding tube placed directly into the stomach.

Gavage Feeding

Tube feeding used when a dog cannot eat independently.

Gene Therapy

Experimental treatment that modifies DNA.

Genetics

Inherited traits that may predispose dogs to disease.

Geriatric Dog

Term for very old dogs, typically over 10 years depending on breed.

Gestation

Pregnancy period in dogs, lasting about 63 days.

Gingivitis

Inflammation of gums; early stage of periodontal disease.

Glaucoma

Painful condition of elevated eye pressure leading to blindness.

Glucosamine

Joint supplement supporting cartilage health.

Glucose

Sugar in the blood used as a primary energy source.

Glutamine

Amino acid that supports gut and immune health.

Goiter

Enlarged thyroid gland, usually caused by iodine deficiency.

Granuloma

Small area of inflamed tissue, often caused by chronic licking.

Greying Fur

Whitening of the coat as a dog ages.

Growth Plate

Area at the ends of bones where growth occurs; closed in adults.

Guillotine Nail Clipper

Tool used to trim nails, especially dewclaws.

Gum Color

Health indicator; pale, blue, or yellow gums may signal illness.

Hair Follicle

Structure in the skin where hair grows.

Hair Loss (Alopecia)

Thinning or loss of fur in aging dogs.

Hairball

Rare in dogs but possible with excessive grooming.

Halitosis

Chronic bad breath, common in senior dogs.

Handler Fatigue

Physical and emotional strain experienced by caregivers.

Hard Palate

The roof of the mouth.

Hardening of Arteries (Atherosclerosis)

Rare in dogs but linked to aging.

Harness (Mobility)

Support device used to assist senior dogs with movement.

Hearing Loss

Common in older dogs due to inner ear degeneration.

Heart Block

Electrical condition that slows heart rhythm.

Heart Disease

General term for cardiac conditions affecting senior dogs.

Heart Murmur

Abnormal heart sound caused by turbulent blood flow.

Heart Rate

Number of heartbeats per minute.

Heart Valve Disease

Degeneration of heart valves common in small senior breeds.

Heat Therapy

Use of warmth to reduce stiffness and pain.

Heatstroke

Dangerous overheating, especially in seniors with weak hearts.

Heel Spurs

Rare but painful bone growths on the paws.

Hemangiosarcoma

Aggressive cancer of blood vessels.

Hematocrit (HCT)

Blood test measuring the percentage of red blood cells.

Hematoma

Pooling of blood under the skin or in ear flaps.

Hematuria

Presence of blood in the urine.

Hemoglobin

Protein in red blood cells that carries oxygen.

Hemophilia

Inherited disorder causing impaired blood clotting.

Hepatitis

Inflammation of the liver caused by infection or toxins.

Hepatomegaly

Enlargement of the liver.

Herbal Medicine

Use of plant-based remedies for therapy.

Hernia

Bulging of an organ through a weakened muscle wall.

Herpesvirus (Canine Herpes)

Virus causing illness in puppies; remains dormant in adults.

High Blood Pressure (Hypertension)

Elevated blood pressure that can damage organs.

Hindlimb Weakness

Declining rear leg strength common in older dogs.

Hip Dysplasia

Malformed hip joint leading to arthritis.

Histamine

Chemical released during allergic reactions.

Histology

Microscopic study of tissues.

HHHHHMM Scale

Quality-of-life assessment tool that scores key areas: Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility, and More good days than bad.

Homeopathy

Alternative medicine using highly diluted substances.

Hormone Replacement

Therapy used to correct endocrine imbalances.

Hospice Care

Comfort-focused care for terminally ill dogs.

Hot Spots

Inflamed, infected patches of skin.

Hydration

Maintenance of proper body fluid balance.

Hydrocephalus

Abnormal fluid buildup in the brain.

Hydrotherapy

Water-based exercise used for arthritis and rehabilitation.

Hypercalcemia

Elevated calcium levels in the blood, often linked to cancer.

Hyperglycemia

High blood sugar levels, commonly seen in diabetes.

Hyperlipidemia

Excess fat levels in the blood.

Hypertension

Persistently high blood pressure.

Hyperthermia

Abnormally elevated body temperature.

Hyperthyroidism

Overactive thyroid condition, rare in dogs.

Hypocalcemia

Low blood calcium causing tremors or seizures.

Hypoglycemia

Low blood sugar levels.

Hypothermia

Dangerously low body temperature.

Hypothyroidism

Underactive thyroid; very common in senior dogs.

Iatrogenic

Condition caused unintentionally by medical treatment.

Ibuprofen

Human painkiller toxic to dogs; never safe unless vet-directed.

Icterus (Jaundice)

Yellowing of skin or eyes due to liver disease.

Idiopathic

Disease with no known cause.

Ileum

Final section of the small intestine.

Immune System

The body’s defense against infection and disease.

Immunity

Ability to resist illness naturally or through vaccination.

Immunodeficiency

Weakened immune system prone to infections.

Immunoglobulin

Antibody protein produced by immune cells.

Immunotherapy

Treatment designed to stimulate or support immune response.

Implant

Medical device placed inside the body, such as a microchip.

Inappetence

Loss of appetite.

Incision

Surgical cut made by a veterinarian.

Incontinence

Inability to control urination or defecation.

Incubator

Heated chamber for fragile newborns; rarely used for seniors.

Indolent Ulcer

Slow-healing corneal ulcer in the eye.

Induction (Anesthesia)

Initial phase of placing a dog under anesthesia.

Infarction

Tissue death due to blocked blood supply.

Infection

Invasion of harmful bacteria, viruses, or fungi.

Inflammation

Swelling and redness caused by injury or disease.

Influenza (Canine Flu)

Viral respiratory infection spread between dogs.

Infusion

Delivery of fluids or medication intravenously.

Inguinal Hernia

Hernia occurring near the groin.

Inguinal Lymph Node

Lymph node in the groin that may swell with infection.

Inhalant Allergens

Airborne triggers such as pollen or dust.

Inhalation

The act of breathing air into the lungs.

Inherited Disease

Genetic condition passed from parents.

Injection

Administration of medication via needle.

Insulin

Hormone regulating blood sugar; given to diabetic dogs.

Insulinoma

Pancreatic tumor producing excess insulin.

Intensive Care Unit (ICU)

Specialized veterinary unit for critically ill patients.

Interdigital Cyst

Painful swelling between paw pads.

Intervertebral Disc Disease (IVDD)

Degeneration of spinal discs causing pain or paralysis.

Intracranial Pressure

Pressure within the skull.

Intramuscular Injection (IM)

Medication delivered into muscle tissue.

Intravenous (IV)

Delivery of fluids or medication directly into a vein.

Intubation

Placement of a tube into the airway for oxygen or anesthesia.

Iron Deficiency

Lack of iron resulting in anemia.

Irritable Bowel Syndrome (IBS)

Chronic intestinal upset without infection.

Ischemia

Reduced blood flow to tissues.

Isotope Scan

Nuclear imaging test to evaluate organ function.

Joint Capsule

Connective tissue surrounding a joint that helps stabilize and lubricate it.

Joint Fluid (Synovial Fluid)

Thick, slippery fluid that cushions joints and allows smooth movement.

Joint Instability

Looseness or abnormal movement in a joint, common with arthritis or ligament damage.

Jugular Vein

Large vein in the neck commonly used for blood draws.

K9

Common term for dogs; also refers to the canine teeth.

Keratitis

Inflammation of the cornea of the eye.

Keratoconjunctivitis Sicca (KCS)

Dry eye condition caused by reduced tear production.

Keratin

Protein that makes up hair, nails, and the outer layer of skin.

Ketoacidosis

Serious diabetic complication involving high blood sugar and acid buildup.

Kidney

Organ that filters blood and removes waste products.

Kidney Disease (CKD)

Chronic loss of kidney function, common in senior dogs.

Kidney Failure

End-stage kidney disease where organs can no longer function adequately.

Kidney Stone

Hard mineral deposits forming in the kidneys or urinary tract.

Knee (Stifle Joint)

Major joint in the rear leg, commonly affected by ligament injuries.

Knee Brace

Support device used to stabilize weak or injured knees.

Knee Surgery

Common surgical treatment for cruciate ligament tears.

Knuckling

Dragging of the paws with the top of the foot down, often a neurological sign.

Koplik Spots

Rare oral lesions seen in certain viral infections.

Krebs Cycle

Biochemical process that produces energy within cells.

Kyphosis

Abnormal curvature of the spine, sometimes age-related.

Labored Breathing

Difficulty inhaling or exhaling, often linked to heart or lung disease.

Lab Work

Blood and urine tests performed by a veterinarian.

Laceration

Deep cut or tear in the skin.

Lactase

Enzyme that digests lactose found in milk.

Lactose Intolerance

Inability to digest dairy products, causing gas or diarrhea.

Laminitis

Painful hoof condition; rare in dogs but referenced in veterinary medicine.

Lameness

Limping caused by injury, arthritis, or joint disease.

Laparoscopy

Minimally invasive surgery using small cameras.

Laryngeal Paralysis

Weakening of the larynx muscles causing noisy or difficult breathing.

Larynx

Voice box located at the top of the trachea.

Laser Therapy

Treatment using light energy to reduce pain and inflammation.

Lateral Recumbency

Position where a dog lies on its side, often for exams or treatment.

Lavage

Washing out a wound or body cavity with sterile fluid.

Lean Body Mass

Muscle and bone tissue, often reduced in senior dogs.

Lens Luxation

Displacement of the eye’s lens, causing pain and vision loss.

Leptospirosis

Bacterial disease spread through urine, preventable by vaccination.

Lesion

Abnormal area of tissue such as a sore, wound, or tumor.

Leukemia

Cancer affecting blood-forming tissues.

Leukocytes

White blood cells that help fight infection.

Leukocytosis

Elevated white blood cell count, often due to infection.

Ligament

Connective tissue that links bones together.

Limb Weakness

Declining muscle or nerve strength, common in seniors.

Lipase

Digestive enzyme that breaks down fats.

Lipid Panel

Blood test measuring cholesterol and triglycerides.

Lipoma

Benign fatty tumor commonly found in older dogs.

Liver

Organ responsible for detoxification, digestion, and metabolism.

Liver Disease

Condition impairing the liver’s normal function.

Liver Enzymes

Blood markers used to evaluate liver health.

Liver Shunt

Abnormal blood vessel bypassing liver filtration.

Local Anesthetic

Numbing medication applied to a specific area.

Lockjaw (Tetanus)

Rare but serious bacterial infection causing muscle stiffness.

Longevity

Life span influenced by genetics, breed, and care.

Low Protein Diet

Diet often recommended for dogs with kidney disease.

Lumbar Spine

Lower portion of the spine, commonly affected by arthritis.

Luxating Patella

Dislocation of the kneecap, common in small breeds.

Lymph Nodes

Glands that filter infection and support immune response.

Lymphatic System

Network that drains fluids and supports immunity.

Lymphoma

Common cancer affecting the lymph nodes.

Macrophage

White blood cell that engulfs bacteria, debris, and damaged cells.

Magnesium

Mineral essential for nerve, muscle, and heart function.

Malabsorption

Inability of the intestine to properly absorb nutrients.

Malignant Tumor

Cancerous growth capable of spreading to other tissues.

Mange

Skin disease caused by mites, leading to hair loss and itching.

Manual Therapy

Hands-on physical techniques used in rehabilitation and pain relief.

Mast Cell Tumor

Common skin cancer in dogs arising from immune cells.

Mastitis

Inflammation of mammary glands, usually in females.

Maxilla

Upper jaw bone.

Medial

Toward the center or midline of the body.

Medication Log

Record tracking prescribed drugs, dosages, and schedules.

Medullary Cavity

Central cavity of bones containing marrow.

Megaesophagus

Enlarged esophagus preventing normal swallowing.

Melanoma

Tumor of pigment-producing cells; may be aggressive.

Melatonin

Hormone sometimes supplemented for sleep or anxiety.

Meloxicam

NSAID medication commonly prescribed for arthritis pain.

Memory Loss

Decline in recall or recognition associated with canine dementia.

Meningitis

Inflammation of membranes surrounding brain and spinal cord.

Meniscus

Cartilage cushion within the knee joint.

Metabolism

Rate at which the body converts food into energy.

Metastasis

Spread of cancer from one location to another.

Microchip

Permanent identification device implanted under the skin.

Microcytosis

Abnormally small red blood cells.

Microflora

Beneficial bacteria living in the digestive tract.

Midline Incision

Surgical cut along the center of the abdomen.

Milk Thistle

Herbal supplement often used to support liver health.

Mineral Deficiency

Lack of essential minerals such as zinc or calcium.

Mobility Aid

Devices like slings or carts that assist movement.

Mobility Loss

Decline in walking ability due to age or disease.

Monoclonal Antibodies

Lab-created proteins used in advanced treatments.

Monocytes

Type of white blood cell involved in immune defense.

Monorchid

Male dog with only one descended testicle.

Mucosa

Moist tissue lining organs such as mouth and stomach.

Mucous Membranes

Moist tissues inside mouth, eyes, and nose.

Muscle Atrophy

Wasting of muscle tissue from disease or disuse.

Musculoskeletal System

Bones and muscles that support movement.

Myalgia

Muscle pain.

Myasthenia Gravis

Neuromuscular disease causing weakness and fatigue.

Myelopathy (DM)

Degenerative spinal cord disease seen in senior dogs.

Myocardial Infarction

Heart attack caused by blocked blood flow.

Myopathy

General muscle disease.

Myositis

Inflammation of muscle tissue.

Nail Bed

Base of the nail where it attaches to the toe; prone to infection or injury.

Nail Grinder

Rotating tool used to smooth nails instead of clipping.

Nasal Discharge

Mucus from the nose, often a sign of infection or allergy.

Nasal Tumor

Cancer growth within the nasal cavity.

Nausea

Feeling of sickness that may lead to vomiting.

Necrosis

Death of tissue due to injury or loss of blood supply.

Neoplasia

Abnormal growth of new tissue, often referring to tumors.

Nephritis

Inflammation of the kidneys.

Nephron

Functional filtering unit of the kidney.

Nerve Conduction Study

Test measuring the speed of nerve signal transmission.

Neurologist

Veterinary specialist in brain and spinal disorders.

Neuropathy

Nerve disease causing pain, weakness, or numbness.

Neutering

Surgical removal of testicles to prevent breeding.

Neutrophils

White blood cells that fight bacterial infection.

Night Blindness

Reduced vision in low-light conditions.

Nodule

Small lump or mass under the skin.

Noise Phobia

Extreme fear of loud sounds like thunder or fireworks.

Non-Steroidal Anti-Inflammatory Drug (NSAID)

Medications commonly used to control pain and inflammation.

Nose Pad

Leather-like surface on a dog’s nose.

Nostril Stenosis

Narrowed nostrils that restrict airflow.

Nutraceutical

Supplement providing health benefits beyond basic nutrition.

Nutrient

Substance obtained from food that supports health.

Nutritional Deficiency

Lack of essential vitamins or minerals.

Nystagmus

Involuntary, rapid eye movement often linked to neurologic disease.

Obesity

Excess body fat that strains joints, heart, and organs.

Obstruction

Blockage in the intestine, airway, or urinary tract.

Occipital Bone

Bone forming the back of the skull.

Occlusion

Alignment of teeth when the mouth closes.

Ocular Pressure (IOP)

Pressure inside the eye; elevated levels cause glaucoma.

Odor (Halitosis)

Chronic bad breath often linked to dental or systemic disease.

Ointment

Thick topical medication applied to skin or eyes.

Old Dog Syndrome (Vestibular Disease)

Sudden balance loss causing head tilt and dizziness.

Olfactory Sense

A dog’s sense of smell.

Oliguria

Abnormally reduced urine output.

Omega-3

Essential fatty acids that support skin, joint, and brain health.

Oncology

Veterinary specialty focused on cancer treatment.

Oncologist

Veterinarian specializing in cancer diagnosis and care.

Onset (Disease)

Beginning of illness symptoms.

Open Fracture

Bone break that penetrates the skin.

Operculum

Anatomical flap or covering structure.

Ophthalmology

Veterinary specialty treating eye conditions.

Ophthalmoscope

Instrument used to examine the interior of the eye.

Opioids

Strong pain-relief medications used cautiously in dogs.

Optic Nerve

Nerve transmitting visual information to the brain.

Oral Mass

Lump or growth inside the mouth.

Oral Ulcer

Painful sore inside the mouth.

Orchiectomy

Medical term for neutering (testicle removal).

Organ Failure

Loss of normal function of a vital organ.

Orthopedic

Relating to bones, joints, and movement.

Orthopedic Bed

Supportive bed designed to reduce joint pressure.

Orthotic Device

Brace or support aiding mobility.

Osteoarthritis

Degenerative joint disease common in senior dogs.

Osteomyelitis

Infection of bone tissue.

Osteosarcoma

Aggressive bone cancer.

Ovary

Female reproductive gland.

Overweight

Above healthy weight but not obese.

Oxidative Stress

Cell damage caused by free radicals.

Oxytocin

Hormone involved in bonding and maternal behavior.

Pacemaker

Implanted device that regulates abnormal heart rhythm.

Pacing

Repetitive walking behavior often linked to anxiety or dementia.

Pain Management

Medical strategies used to control acute or chronic pain.

Palate

Roof of the mouth, including hard and soft palate.

Palpation

Veterinary technique of feeling body structures to detect abnormalities.

Pancreas

Organ producing digestive enzymes and insulin.

Pancreatitis

Inflammation of the pancreas causing pain and vomiting.

Papilloma

Benign wart-like growth on skin or inside mouth.

Paralysis

Partial or complete loss of movement.

Parasite

Organism living off a host, such as fleas or worms.

Parathyroid Gland

Gland that regulates calcium balance in the body.

Parenteral Nutrition

Feeding delivered intravenously when oral intake isn’t possible.

Parvovirus (Parvo)

Highly contagious viral disease, often fatal in puppies.

Patella

Kneecap bone.

Patellar Luxation

Dislocation of the kneecap causing lameness.

Pathogen

Disease-causing organism.

Pathology

Study of disease causes and effects.

Paw Pads

Thick skin under feet that protects bones and joints.

Paw Protection

Booties or balms used to prevent injury.

Peak Flow

Measurement of air expelled from lungs.

Pelvis

Hip bone structure supporting hind limbs.

Penicillin

Class of antibiotics used to treat bacterial infections.

Pericarditis

Inflammation of the heart’s outer sac.

Pericardium

Protective membrane surrounding the heart.

Periodontal Disease

Advanced gum disease causing tooth loss.

Periosteum

Connective tissue covering bones.

Peripheral Neuropathy

Nerve damage outside the brain and spinal cord.

Peritonitis

Inflammation of the abdominal lining.

Persistent Cough

Ongoing cough often linked to heart or lung disease.

Phagocyte

Immune cell that engulfs harmful microbes.

Pharynx

Throat passage connecting mouth and nasal cavity.

Phosphorus

Mineral essential for bones and kidney function.

Physical Exam

Routine hands-on veterinary health assessment.

Physical Therapy

Rehabilitation exercises to restore mobility.

Pica

Eating non-food items.

Pigment Loss

Whitening of nose or coat with age.

Pituitary Gland

Master gland controlling hormone release.

Placebo Effect

Perceived improvement without active treatment.

Platelets

Blood cells responsible for clotting.

Pleural Effusion

Fluid buildup in the chest cavity.

Pneumonia

Infection of the lungs.

Polydipsia

Excessive thirst often linked to kidney disease or diabetes.

Polyneuropathy

Widespread nerve disease.

Polyphagia

Increased appetite, often from endocrine disorders.

Polyuria

Excessive urination.

Portosystemic Shunt (PSS)

Abnormal blood vessel bypassing the liver.

Post-Operative Care

Recovery period following surgery.

Potassium

Mineral essential for heart and muscle function.

Prong Collar

Training tool not recommended for senior dogs.

Probiotic

Supplement containing beneficial gut bacteria.

Progesterone

Hormone involved in female reproduction.

Prognosis

Expected outcome of a disease.

Progressive Retinal Atrophy (PRA)

Inherited eye disease leading to blindness.

Prolapse

Organ slipping out of its normal position.

Proprioception

Body awareness and joint position sense.

Prosthesis

Artificial replacement for missing limb.

Protein

Essential nutrient for muscle repair and body function.

Proteinuria

Protein detected in urine, often kidney disease.

Pruritus

Severe itching.

Psychogenic Polydipsia

Excessive water drinking caused by behavior.

Pulmonary Artery

Blood vessel carrying blood from heart to lungs.

Pulmonary Edema

Fluid accumulation in the lungs.

Pulmonary Fibrosis

Scarring of lung tissue.

Pulse

Heartbeat felt through an artery.

Pupil

Central opening of the eye controlling light entry.

Puppy Pads

Absorbent pads for incontinence management.

Purulent Discharge

Pus-filled drainage from infection.

Pyelonephritis

Bacterial kidney infection.

Pyoderma

Bacterial skin infection.

Pyometra

Life-threatening uterine infection in unspayed females.

Quality of Life Scale

Tool used by veterinarians to assess comfort and well-being in sick or aging dogs.

Quarantine

Isolation period to prevent the spread of infectious disease.

Quercetin

Plant flavonoid sometimes used as a natural antihistamine.

Quick (Nail)

Blood vessel inside the nail; cutting too short causes bleeding.

Quiescent Phase

Inactive period when a disease is not progressing.

Rabies

Deadly viral disease transmitted through bites; preventable by vaccination.

Rabies Titer

Blood test measuring immunity after vaccination.

Radiograph (X-ray)

Imaging technique used to view bones and internal organs.

Radiology

Veterinary specialty using imaging technologies.

Range of Motion (ROM)

Measurement of joint flexibility.

Rapid Breathing (Tachypnea)

Faster-than-normal breathing rate.

Rash

Redness or irritation of the skin.

Raw Diet

Feeding uncooked meat and organs; controversial in seniors.

Reactive Dog

Dog that overreacts to stimuli like noises or other dogs.

Recumbency

Lying down position used during exams or illness.

Rectal Exam

Internal examination of the rectum.

Rectum

Final section of the large intestine.

Recurrence

Return of disease after treatment.

Red Blood Cell (RBC)

Cell responsible for oxygen transport.

Reflex

Automatic response to a stimulus.

Reflux (GERD)

Backward flow of stomach acid into the esophagus.

Rehabilitation Therapy

Physical treatment to restore mobility.

Relapse

Return of symptoms after improvement.

Remission

Period of reduced or absent disease signs.

Renal Failure

Loss of kidney function.

Renal Function

How effectively the kidneys are working.

Rescue Remedy

Herbal product sometimes used for stress.

Respiratory Rate

Number of breaths per minute.

Respiratory System

Organs responsible for breathing.

Resting Energy Requirement (RER)

Calories required at rest.

Retina

Light-sensitive tissue at back of the eye.

Retinal Detachment

Separation of retina from back of eye.

Retinal Degeneration

Progressive breakdown of retinal tissue.

Retinopathy

Eye disease affecting the retina.

Retrovirus

Virus that inserts genetic material into host DNA.

Rheumatoid Arthritis

Immune-mediated joint disease.

Rib Cage

Bone structure protecting chest organs.

Rickets

Bone weakening from vitamin D deficiency.

Ringworm

Fungal skin infection causing hair loss.

Risk Factors

Conditions increasing likelihood of disease.

Roaring

Loud breathing sound linked to laryngeal paralysis.

Root Canal

Dental procedure treating infected teeth.

Roundworms

Common intestinal parasites.

Ruff

Thick fur around the neck.

Sacrum

Lower spine bone located above the tail.

Saliva

Fluid produced in the mouth that aids digestion.

Sarcoma

Malignant tumor arising from connective tissue.

Sarcopenia

Age-related loss of muscle mass.

Scabies

Severe mange caused by Sarcoptes mites.

Scapula

Shoulder blade bone.

Seizure

Sudden uncontrolled electrical activity in the brain.

Seizure Disorder (Epilepsy)

Chronic condition involving recurrent seizures.

Selegiline

Medication used to treat canine cognitive dysfunction.

Sepsis

Life-threatening infection in the bloodstream.

Septic Arthritis

Joint infection causing pain and swelling.

Serology

Study of blood serum for antibodies.

Serotonin

Neurochemical affecting mood and behavior.

Sertraline

Medication prescribed for anxiety or behavior disorders.

Shaking

Tremors caused by age, fear, or disease.

Shock

Dangerous state of poor blood circulation.

Shoulder Dysplasia

Abnormal shoulder joint development.

Side Effects

Secondary reactions to medications.

Sinus Infection (Sinusitis)

Inflammation of the sinus cavities.

Skin Biopsy

Removal of skin tissue for diagnostic testing.

Skin Cancer

Malignant growth affecting skin cells.

Skin Elasticity

Measure of hydration and skin health.

Skin Lesion

Abnormal skin area such as sore or bump.

Skin Tags

Benign, hanging skin growths.

Sleep Apnea

Breathing pauses during sleep.

Slipped Disc

Herniated spinal disc causing pain.

Small Intestine

Organ where nutrient absorption occurs.

Sneezing

Forceful expulsion of air from the nose.

Soft Tissue

Muscles, ligaments, fat, and skin.

Soft Tissue Sarcoma

Cancer arising from connective tissues.

Spay (Ovariohysterectomy)

Surgical removal of female reproductive organs.

Sphincter

Muscle controlling bodily openings.

Spinal Cord

Nerve tissue transmitting signals from brain.

Spinal Stenosis

Narrowing of spinal canal compressing nerves.

Splenectomy

Surgical removal of the spleen.

Spleen

Organ filtering blood and supporting immunity.

Spondylosis

Degenerative spinal condition with bone spurs.

Sprain

Ligament injury caused by overstretching.

Squamous Cell Carcinoma

Aggressive form of skin cancer.

Stabilization

Initial emergency care to restore vital functions.

Stasis

Slowing or stopping of normal bodily flow.

Steroid

Medication used to reduce inflammation.

Stifle

Dog’s knee joint.

Stomatitis

Inflammation of the mouth lining.

Stress

Physical or emotional strain affecting health.

Stroke

Brain injury from disrupted blood supply.

Struvite Stones

Bladder stones formed from magnesium salts.

Subluxation

Partial joint dislocation.

Submandibular Gland

Salivary gland located under the jaw.

Sudden Death

Unexpected loss of life.

Supplement

Additional nutrient given beyond diet.

Supportive Care

Treatment aimed at comfort rather than cure.

Syncope

Temporary fainting or collapse.

Synovial Fluid

Lubricating joint fluid.

Syringe Feeding

Assisted feeding for dogs unable to eat.

Tachycardia

Abnormally fast heart rate.

Tail Docking

Surgical removal of part of the tail; cosmetic in most cases.

Tapeworms

Intestinal parasites commonly transmitted by fleas.

Tartar

Hardened plaque buildup on teeth.

Tear Ducts

Channels that drain tears from the eyes.

Tear Stains

Reddish discoloration beneath the eyes.

Teeth Cleaning (Dental Prophylaxis)

Professional dental scaling performed under anesthesia.

Temporomandibular Joint (TMJ)

Jaw joint connecting the skull and lower jaw.

Tendon

Connective tissue attaching muscle to bone.

Tendonitis

Inflammation of a tendon causing pain and stiffness.

TENS Therapy

Electrical nerve stimulation used for pain relief.

Tensile Strength

Resistance of tissue to tearing or stretching.

Terminal Illness

Disease expected to result in death.

Testicles

Male reproductive organs producing sperm and hormones.

Testosterone

Male sex hormone influencing muscle mass and behavior.

Tetanus

Bacterial infection causing muscle rigidity.

Therapeutic Diet

Prescription food formulated for medical conditions.

Thermotherapy

Use of heat to relieve pain and stiffness.

Thoracic Cavity

Chest cavity containing the heart and lungs.

Thorax

Chest region of the body.

Thrombocytopenia

Abnormally low platelet count.

Thrombosis

Formation of a blood clot inside a vessel.

Thyroid Gland

Hormone-producing gland regulating metabolism.

Thyroid Hormone

Chemical messenger controlling energy balance.

Thyroid Panel

Blood test assessing thyroid function.

Thyroxine (T4)

Hormone used to treat hypothyroidism.

Tick-Borne Disease

Illness transmitted by tick bites.

Tick Control

Preventive methods including collars and medications.

Tissue Biopsy

Removal of tissue sample for lab analysis.

Titer Test

Blood test measuring antibody levels.

Topical Medication

Medication applied directly to the skin.

Toxin

Harmful substance from plants, chemicals, or microbes.

Trachea (Windpipe)

Main airway carrying air to the lungs.

Tracheal Collapse

Weakening of airway common in small breeds.

Tranquilizer

Medication used to reduce anxiety.

Transdermal Patch

Medication absorbed through the skin.

Transfusion

Transfer of blood or plasma.

Transition Diet

Gradual change from one food to another.

Trauma

Physical injury from accident or impact.

Tremor

Involuntary shaking movement.

Tricuspid Valve

Heart valve between right atrium and ventricle.

Trichiasis

Abnormal eyelash growth irritating the eye.

Trigeminal Neuralgia

Severe nerve pain affecting the face.

Triglycerides

Blood fats measured in wellness screenings.

Tumor

Abnormal mass of tissue.

Tympanic Membrane

Eardrum separating outer and middle ear.

Type II Diabetes (Canine Diabetes Mellitus)

Common endocrine disorder in older dogs.

Ulcer

An open sore on the skin or inside the body.

Ulcerative Colitis

Chronic inflammation of the colon lining.

Ulna

Long bone in the forelimb paired with the radius.

Ultrasound

Imaging test using sound waves to view organs.

Umbilical Hernia

Protrusion of tissue near the belly button.

Unconsciousness

Loss of awareness due to illness or trauma.

Underweight

Below healthy body condition score.

Undescended Testicle

Testicle that failed to descend into the scrotum.

Unilateral

Affecting only one side of the body.

Unsteady Gait

Wobbly or imbalanced walking.

Upper Respiratory Infection

Cold-like illness affecting nose and throat.

Urea

Waste product filtered from the blood by kidneys.

Uremia

Toxic buildup of urea from kidney failure.

Ureter

Tube carrying urine from kidney to bladder.

Urethra

Tube carrying urine out of the body.

Urinalysis

Laboratory test of urine for health insights.

Urinary Catheter

Tube used to drain urine from the bladder.

Urinary Incontinence

Loss of bladder control in senior dogs.

Urinary Stones (Uroliths)

Hard mineral deposits in bladder or kidneys.

Urinary Tract Infection (UTI)

Bacterial infection of the urinary system.

Urine Culture

Lab test identifying bacteria in urine.

Urolithiasis

Condition involving formation of urinary stones.

Urticaria (Hives)

Allergic skin reaction with raised welts.

Uveitis

Inflammation inside the eye causing pain and redness.

Vaccination

Injection given to prevent infectious disease.

Vaccine Booster

Follow-up dose to maintain immunity.

Vagus Nerve

Major nerve influencing digestion, heart rate, and organ function.

Valvular Disease

Degeneration of heart valves common in senior dogs.

Vascular System

Body-wide network of blood vessels.

Vector-Borne Disease

Illness transmitted by fleas, ticks, or mosquitoes.

Vein

Blood vessel carrying blood back to the heart.

Velcro Dog

Nickname for dogs that cling closely to their owners.

Venipuncture

Procedure used to draw blood from a vein.

Ventricular Arrhythmia

Irregular heart rhythm originating in the ventricles.

Ventricle

Lower chamber of the heart that pumps blood.

Ventrolateral

Positioned toward the front and side of the body.

Vertebrae

Individual bones making up the spine.

Vertebral Disc Disease

Degeneration of spinal discs causing pain or paralysis.

Vestibular Disease

Balance disorder causing head tilt and dizziness.

Vestibular System

Inner ear system controlling balance.

Veterinarian

Doctor trained in animal medicine.

Veterinary Technician

Certified professional assisting veterinarians.

Viral Load

Amount of virus present in the body.

Virus

Microscopic organism that invades living cells.

Vision Loss

Partial or complete loss of eyesight.

Vitamin

Essential nutrient required in small amounts.

Vitamin Deficiency

Lack of a required vitamin affecting health.

Vitamin E

Antioxidant that supports immune function.

Vital Signs

Key health indicators including pulse, temperature, and respiration.

Vomiting

Forceful expulsion of stomach contents.

Vomiting Blood (Hematemesis)

Presence of blood in vomit, often serious.

Vomiting Syndrome

Chronic vomiting from multiple possible causes.

Vulva

External female genital organ.

Walking Aid

Harness, sling, or device that helps dogs move safely.

Warm Compress

Heated cloth applied to ease pain or swelling.

Wart (Papilloma)

Benign skin growth caused by papillomavirus.

Wasting Syndrome

Severe muscle loss from chronic illness.

Water Intake

Amount of water a dog drinks daily.

Water Therapy (Hydrotherapy)

Exercise in water to support joints and mobility.

Weakened Immune System

Reduced ability to fight infection.

Weight Bearing

Ability to support weight on limbs.

Weight Loss

Unintended reduction in body mass.

Wellness Exam

Routine veterinary check-up.

White Blood Cell (WBC)

Immune cells that help fight infection.

Whiskers (Vibrissae)

Sensory hairs on the muzzle and face.

Whistle Breathing (Stridor)

High-pitched breathing sound from airway blockage.

Whole Food Diet

Feeding minimally processed ingredients.

Wiggly Gait

Side-to-side walking pattern often from hip issues.

Wilderness Toxin

Poison exposure from plants, snakes, or contaminated water.

Windpipe (Trachea)

Air passage connecting throat to lungs.

Wobblers Syndrome

Spinal cord compression in the neck causing weakness.

Wound Care

Cleaning and protecting injuries.

Wound Dressing

Bandage applied to protect a wound.

Wrist (Carpus)

Joint equivalent to the human wrist.

Wrist Brace

Orthotic device to stabilize weak carpal joints.

Wry Neck (Torticollis)

Head tilt caused by muscle or nerve issues.

Xanthoma

Fatty skin nodule, usually benign.

Xanthelasma

Yellowish cholesterol deposit around the eyes.

X-Ray

Radiographic imaging used to view bones and organs.

Xerostomia (Dry Mouth)

Reduced saliva production, often medication-related.

Xiphoid Process

Small bone at the end of the sternum.

Xylitol

Artificial sweetener that is toxic to dogs.

Xylose Test

Laboratory test measuring sugar absorption efficiency.

Yeast Infection

Overgrowth of yeast causing itching, redness, and odor.

Yeast Otitis

Ear infection caused by yeast overgrowth.

Yeast Overgrowth

Imbalance of yeast on skin or ears leading to irritation.

Yellow Fat Disease (Pansteatitis)

Inflammation of body fat caused by dietary imbalance.

Yielding Gait

Weak or unstable walking pattern seen in older dogs.

Yersinia

Bacteria that can cause intestinal disease.

Yoga for Dogs (Doga)

Gentle stretching and bonding exercises with dogs.

Young-Onset Arthritis

Arthritis developing before senior years.

Zinc Deficiency

Lack of zinc causing skin and coat problems.

Zinc Poisoning

Toxic reaction from ingesting zinc objects such as pennies.

Zinc-Responsive Dermatosis

Skin disease caused by poor zinc absorption.

Zoonotic Disease

Illness transmissible between animals and humans.

Zoonosis

General term for diseases that spread across species.

Zooplankton Allergy

Rare allergic reaction linked to fish-based diets.

Zoonotic Parasite

Parasites capable of infecting both humans and animals.

Zosteriform Rash

Rash that follows a nerve pathway.

Zygomatic Arch

Cheekbone structure of the skull.

Zygote

Fertilized egg cell used in reproductive medicine.