Everything About Cats.
One Planet.
The world's most comprehensive knowledge platform for cat owners, veterinarians, breeders, and cat lovers — 505 diseases, 75 breeds, 483 articles, built in loving memory of Helsinki.
Diseases
Symptoms, causes, treatment & prevention
Breeds
Discover cat breeds from around the world
Nutrition
Food, diet plans & nutrition guides
Behavior
Understanding cat behavior & training
Care Guide
Daily care, grooming & wellness
Emergency
Emergency situations & first aid
AI Vet Assistant
Ask anything about your cat
Community & Forum
Talk with cat owners & verified vets
Lost & Found
Report or search for a missing cat
Explore Diseases
Browse by category or view all diseases
⚠ Emergency right now?
Contact your vet or nearest emergency animal hospital immediately. Browse the Emergency Guide for step-by-step first aid, or the Poison Database if you suspect a toxic exposure.
Popular Breeds
Explore cat breeds and their traits
From the Article Library
Browse all 483 articles →MDR1 Gene Sensitivity in Cats: A Complete Guide to This Emerging Medication Safety Consideration
While extensively studied and well-established in certain dog breeds, emerging evidence suggests some cats may carry genetic…
healthHepatic Encephalopathy in Cats: A Complete Guide to This Serious Liver-Brain Connection
When liver dysfunction allows toxins to affect brain function, the resulting neurological symptoms represent a genuine emergency…
behaviorLitter Box Aversion: Telling Medical From Behavioral
A cat avoiding the litter box is showing you a symptom, not a personality flaw — and treating a medical cause as a behavior…