Top 5 Serious Cat Illnesses Only Your Vet Can Diagnose

Cardiomyopathy: The most common form of heart disease and sudden death in indoor cats, cardiomyopathy has few visible symptoms. But Judi H.’s vet heard something during her cat’s checkup. “My vet found a heart murmur when my cat was 7 that wasn’t there when she was 6,” Judi says. “It turned out to be cardiomyopathy, which we treated and she lived to be 16. Even if your cats are inside, they should go to the vet every year. Mine are only inside, but if my vet hadn’t found that murmur, my cat would have been dead by the age of 8.”

10 Subtle Signs of Illness in Cats

Changes in Interactions: A previously clingy cat acting uncharacteristically aloof, or an independent cat transforming into “Velcro kitty” are examples.

Skip to content

Learn more about how Purina and Petfinder are caring for pets and their owners.

Location

Use current location available

Find a dog Find a cat

Adopt or Get Involved
Dogs & Puppies
Cats & Kittens
Other Types of Pets

Favorites

Home
Cats & Kittens
Cat Health & Wellness
Health Concerns
Tips for Managing Cat Illnesses

Tips for Managing Cat Illnesses

It only takes 60 seconds!: Get Started

Find Your Best MatchIt only takes 60 seconds!

Get Started

Search for Animal Shelters or Rescues

Location

No location suggestions available

Enter Shelter or Rescue Name

More in Health Concerns

View All

Health Concerns
What Is Cat Huffing and Is It Safe?
Health Concerns
Tips for Living with Cat Allergies – Treatment & Remedies
Health Concerns
Subtle Signs & Symptoms Your Cat Is Sick

Finding pets for you...

Resources

FAQs
Mobile App Download
News Center
Put Petfinder On Your Site
Contact Us

Adopt or Get Involved

All Adopt or Get Involved
Adopting Pets
Animal Shelters & Rescues
Other Types of Pets

About Dogs & Puppies

All About Dogs & Puppies
Dog Adoption
Dog Breeds
Feeding Your Dog
Dog Behavior
Dog Health & Wellness
Dog Training
Other Dog Information

About Cats & Kittens

All About Cats & Kittens
Cat Adoption
Cat Breeds
Feeding Your Cat
Cat Behavior
Cat Health & Wellness
Cat Training
Other Cat Information

Shelter & Rescue Registration
Sitemap
Terms of Service
Notice at Collection
Privacy Policy (updated)
Accessibility
Cookie Policy

All trademarks are owned by Société des Produits Nestlé S.A., or used with permission.