Pet Health Library

Guides to pet symptoms and conditions, cited to the veterinary literature — what's normal, what's not, and when to see a vet.

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Showing 1–24 of 1190 articles

🐕Dog HealthOct 13, 2026

🩺Chronic & Systemic

Dog False Pregnancy: Swollen Mammary Glands or a Problem?

Milk and swollen mammary glands do not prove pregnancy. Learn what to record, what not to attempt, and which changes need urgent veterinary attention.

🐕Dog HealthOct 11, 2026

🌿Skin & Coat

Dog Ear Margin Crusts: Greasy Scale, Scabs, or Sore Ear Tips?

Crusts along a dog's ear edge are a symptom, not a diagnosis. Learn what to record, what not to remove, and which changes need urgent care.

🐈Cat HealthOct 11, 2026

🌿Skin & Coat

Cat Paw Pad Has a Horn-Like Growth: Keratin or Another Lesion?

A hard projection from a cat's paw pad is not an extra claw. What to record, why appearance is not a diagnosis, and when to contact your vet.

🐀Rat HealthOct 10, 2026

🐾Behavior & Training

Rat Bruxing and Boggling: What Else Should You Check?

Teeth grinding and rhythmic eye movement do not tell you whether a rat is comfortable or painful. Check eating, breathing, posture, and persistent eye changes.

🐕Dog HealthOct 10, 2026

🌿Skin & Coat

Dog Has Thick, Cracked Paw Pads: Hyperkeratosis or Something Else?

Thick, spiky paw pads can be hyperkeratosis, but cracks, pain, and other skin changes need a closer look. Learn what to record and what not to trim at home.

🐭Chinchilla HealthOct 10, 2026

🚽Urinary

Chinchilla Vaginal Discharge: Urine, Bleeding, or Reproductive Disease?

Wet or bloody fur beneath a female chinchilla's tail does not identify its source. Learn what to record, what not to attempt, and which signs need urgent veterinary care.

🐈Cat HealthOct 10, 2026

🌿Skin & Coat

Cat Greasy Tail Base: Stud Tail or Inflamed Skin?

A waxy patch on top of a cat's tail can reflect gland secretions. Soreness, discharge, and a distinct lump need a different response from simple oil buildup.

🦜Bird HealthOct 10, 2026

🌿Skin & Coat

Lovebird Has Multiple Feathers From One Follicle: What to Do

A cluster of feathers apparently growing from one opening can signal an abnormal follicle. Learn what to photograph, what not to pull, and when to seek care.

🐕Dog HealthOct 10, 2026

🚽Urinary

Dog Testicle or Scrotum Swollen: Pain, Infection, or a Lump?

New swelling needs an examination, even if your dog seems comfortable. Learn what to record, why skin swelling and a testicular lump are different, and which signs need urgent care.

🐈Cat HealthOct 10, 2026

🌿Skin & Coat

Cat Black Spots on the Nose or Lips: Freckles or a Lesion?

Flat pigment spots can be lentigo. A raised, sore, bleeding, or changing area needs a different assessment. Learn what to record and when to call your vet.

🦎Reptile HealthOct 10, 2026

🩺Chronic & Systemic

Aquatic Turtle Neck or Limb Swelling: Lump or Fluid Buildup?

A new lump and widespread puffiness are different patterns, not diagnoses. Record where swelling occurs, check breathing and swimming, and arrange reptile-veterinary care without trying to drain or medicate it.

🐰Rabbit HealthOct 8, 2026

🌿Skin & Coat

Rabbit Sore Dewlap: Moist Dermatitis or Saliva-Damaged Skin?

Red, raw skin beneath a rabbit’s dewlap needs more than drying the fur. Learn what to record, how moisture and dental saliva differ, and when care is urgent.

🦜Bird HealthOct 8, 2026

🌿Skin & Coat

Parrot Feather Stress Bars: What Horizontal Lines Can Tell You

A transverse weak line can record a problem during feather growth, but cannot identify its cause. Learn what to photograph, what not to change, and which accompanying signs need urgent care.

🐹Guinea Pig HealthOct 8, 2026

🌿Skin & Coat

Guinea Pig Grease Gland Buildup: Oily Fur or Inflamed Skin?

An oily patch above the anus can be normal gland secretion. Pain, raw skin, discharge, or a lump needs a different response from routine grooming.

🐕Dog HealthOct 8, 2026

🚽Urinary

Dog Preputial Discharge: Normal Secretion or a Problem?

A little discharge from a male dog's sheath can be normal. Learn which changes matter, what to record, and which urinary or penile signs need urgent care.

🐈Cat HealthOct 8, 2026

🌿Skin & Coat

Cat Whiskers Breaking or Falling Out: What Else Should You Check?

A loose whisker is different from repeated breakage with sore facial skin. Check the pattern, nearby skin, and your cat's behavior before choosing the next step.

🐾Ferret HealthOct 7, 2026

🩺Chronic & Systemic

Spayed Ferret With a Swollen Vulva: Why It Needs an Exam

Vulvar swelling after spaying is not routine heat. Adrenal hormone disease, ovarian tissue, and local inflammation need different investigations.

🐕Dog HealthOct 7, 2026

🤮Digestive

Dog Keeps Taking the Prayer Position: Stretch or Abdominal Pain?

Repeated front-down, rear-up posture can be a clue to discomfort. Judge the whole episode, not the pose alone, and know when to seek emergency care.

🦜Bird HealthOct 7, 2026

🌿Skin & Coat

Cockatiel Bald Patch Behind the Crest: Stable Patch or New Feather Loss?

A small longstanding bare area is different from new or spreading head feather loss. Compare old photos, inspect skin without picking, and involve an avian vet when it changes.

🐈Cat HealthOct 7, 2026

🌿Skin & Coat

Cat Ear-Tip Scabs: Scratches, Sun Damage, or Something Else?

A recurring scab on a cat's ear tip needs more than cleaning. Learn which changes warrant prompt assessment and what to record before the visit.

🦎Reptile HealthOct 7, 2026

🌿Skin & Coat

Aquatic Turtle Peeling Skin: Normal Shedding or a Skin Problem?

Thin skin fragments can be part of shedding, but wounds, discharge, and illness are not. Check the skin underneath without pulling and review the habitat with a reptile vet.

🐈Cat HealthOct 7, 2026

💨Respiratory

Cat Nosebleed: What to Do and When It Is Urgent

Blood from a cat's nose is a sign, not a diagnosis. Check breathing and other bleeding first, keep your cat calm, and arrange veterinary assessment even if it stops.

🐕Dog HealthOct 7, 2026

👁️Eyes & Ears

Dog's One Eyelid Swollen: Skin Lump or Eye Emergency?

A swollen eyelid is not the same as a red eyeball. Check whether the eye is painful or the face is swelling, and have a veterinarian examine the cause.

🐟Fish HealthOct 7, 2026

💨Respiratory

Goldfish Gasping at the Surface: Check the Water First

Repeated surface gulping may signal low oxygen, nitrite, or gill disease. Check the entire tank and its equipment before assuming one fish is simply hungry.