Pet Health Library

Vet-reviewed guides to pet symptoms and conditions — what's normal, what's not, and when to see a vet.

All (1031)🐕 Dogs (223)🐈 Cats (231)🐰 Rabbits (146)🐹 Guinea Pigs (99)🐹 Hamsters (82)🦜 Birds (87)🦎 Reptiles (37)🐾 Ferrets (43)

All topics 🚨Emergency(2)🤮Digestive(15)💨Respiratory(10)🚽Urinary(4)🌿Skin & Coat(14)🦴Mobility(4)🍽️Eating & Drinking(9)👁️Eyes & Ears(12)🩺Chronic & Systemic(18)🐾Behavior(3)

Showing 193–216 of 231 articles found

🐈Cat HealthMay 16, 2026

🤮Digestive

Cat Constipation: Symptoms, Home Remedies, and When It Becomes an Emergency

Cat constipation signs include straining, no stool for 48+ hours, vomiting, and lethargy. Learn causes, home care, and when to see a vet immediately.

🐈Cat HealthMay 15, 2026

🚽Urinary

Why Is My Cat Eating Litter? Causes, Risks, and When to Worry

Cats eating litter can signal anemia, mineral deficiency, or behavioral issues. Learn what causes it and when it needs veterinary attention.

🐈Cat HealthMay 15, 2026

Cat Conjunctivitis: Eye Infection Signs, Causes, and When to See a Vet

Cat conjunctivitis causes red, swollen, or goopy eyes. Learn the signs, common causes, and when home care isn't enough.

🐈Cat HealthMay 15, 2026

🐾Behavior

Cat Suddenly Aggressive: Why It Happens and What to Do

A cat that suddenly becomes aggressive is often in pain or fearful. Learn what causes sudden aggression and when to call the vet.

🐈Cat HealthMay 14, 2026

Cat Not Pooping: Causes, Home Care, and When to See a Vet

A cat not pooping for more than 48 hours can be serious. Learn the most common causes of feline constipation and exactly when to get help.

🐈Cat HealthMay 14, 2026

Why Is My Cat Crying at Night? Causes and How to Help

Cat crying at night keeping you awake? Learn the most common reasons cats vocalize after dark — from hunger to medical issues — and how to settle them.

🐈Cat HealthMay 14, 2026

🌿Skin & Coat

Cat Bald Patches: Causes, Treatments, and When to Worry

Noticing cat bald patches? Learn the most common reasons cats lose hair — from parasites to stress — and what treatments actually work.

🐈Cat HealthMay 13, 2026

💨Respiratory

Cat Breathing With Mouth Open: Always an Emergency?

Cats almost never breathe through their mouths. Open-mouth breathing is usually a respiratory emergency. Here's what to do right now.

🐈Cat HealthMay 13, 2026

🍽️Eating & Drinking

Senior Cat Not Eating: Causes, Warning Signs, and What to Do

Your senior cat is not eating? Appetite loss in older cats is rarely just pickiness. Here are the most common causes and warning signs.

🐈Cat HealthMay 13, 2026

Why Is My Cat's Tail Puffed Up? Decoding Feline Body Language

Is your cat's tail puffed up like a bottlebrush? Learn what piloerection means — from fear and aggression to play — and when it's a sign to step back.

🐈Cat HealthMay 13, 2026

Persian Cat Health Issues: 7 Conditions to Watch For

Persian cats are beautiful but prone to specific health problems, including PKD and breathing issues. Learn the 7 most common persian cat health issues.

🐈Cat HealthMay 13, 2026

Senior Cat Pacing and Meowing at Night: Causes and Solutions

Is your older cat pacing and yowling at night? It's not just behavior — often it's hyperthyroidism, dementia, or pain. Here's how to figure out which.

🐈Cat HealthMay 12, 2026

🐾Behavior

Why Is My Cat Meowing So Much? Causes of Excessive Vocalization

Excessive cat meowing, especially at night, can signal hyperthyroidism, cognitive decline, or pain. Here's what the yowling means.

🐈Cat HealthMay 12, 2026

Cat Hairball Symptoms: When It's Normal and When to Worry

Cat hairballs are common, but some symptoms signal danger. Learn what's normal, when to worry, and how to help your cat.

🐈Cat HealthMay 12, 2026

🌿Skin & Coat

Cat Lump Under the Skin: What It Could Be and When to Act

Found a lump under your cat's skin? Learn the common causes — from benign lipomas to serious tumors — and when to see a vet.

🐈Cat HealthMay 12, 2026

Blood in Cat Urine: Causes, Symptoms, and What to Do

Blood in cat urine (hematuria) can signal a UTI, bladder stones, or stress-related disease. Here's what it means and when to act.

🐈Cat HealthMay 11, 2026

Cat Over-Grooming: Why Your Cat Licks Itself Raw and What to Do

Cat over-grooming causes fur loss and skin wounds. Learn if your cat's excessive licking is stress, allergies, or a medical issue.

🐈Cat HealthMay 11, 2026

🍽️Eating & Drinking

Cat Losing Weight Fast: Causes, Warning Signs, and What to Do

A cat losing weight fast is nearly always a medical warning sign. Learn the causes — hyperthyroidism, diabetes, IBD, cancer — and when to act.

🐈Cat HealthMay 11, 2026

👁️Eyes & Ears

Why Is My Cat Drooling? Causes, Warning Signs, and When to See a Vet

Sudden or excessive cat drooling is usually a medical warning sign. Learn the most common causes — dental disease, toxins, nausea — and when to call a vet.

🐈Cat HealthMay 10, 2026

Signs of Stress in Cats: How to Tell If Your Cat Is Anxious

Cats hide stress well. Learn the subtle and obvious signs your cat is anxious, and what you can do to help.

🐈Cat HealthMay 10, 2026

💨Respiratory

Cat Upper Respiratory Infection: Symptoms, Treatment, and When to Worry

Cat upper respiratory infections are common but can turn serious fast. Learn the symptoms, home care tips, and red flags.

🐈Cat HealthMay 10, 2026

🩺Chronic & Systemic

Cat Hyperthyroidism Symptoms: Why Your Cat Is Losing Weight Despite Eating Well

Weight loss despite a ravenous appetite is the hallmark sign of cat hyperthyroidism. Learn all the symptoms and treatment options.

🐈Cat HealthMay 9, 2026

💨Respiratory

Cat Sneezing Blood: Should You Be Worried?

Cat sneezing blood (epistaxis) needs prompt veterinary attention. Learn the causes — from URIs to nasal tumors — and what to do right away.

🐈Cat HealthMay 9, 2026

🤮Digestive

Cat Vomiting Bile: Yellow Liquid, Causes & What To Do

Cat vomiting bile — yellow or green liquid — is often due to an empty stomach, hairballs, or IBD. Learn the causes and when to see a vet.