How much raw fish for your cat?
Most guides say "a few pieces". Enter your cat's weight and get the actual daily ceiling, worked out from raw fish's calories and the 10%-of-daily-calories treat rule vets use.
Assumes a healthy, neutered adult at a stable weight, and that this is their only treat that day. Puppies, pregnant, very active or unwell pets need different amounts — ask your vet.
Why this verdict for cats
A steady diet of raw fish can cause a thiamine (vitamin B1) deficiency in cats, plus parasite and bacteria risks. The occasional bit of cooked fish is the safer choice.
Warning signs to watch for
- Vomiting
- Wobbliness (with B1 deficiency)
- Loss of appetite
🍽️ Feeding it safely?
Frequently asked questions
Can cats eat raw fish?
In moderation. A steady diet of raw fish can cause a thiamine (vitamin B1) deficiency in cats, plus parasite and bacteria risks. The occasional bit of cooked fish is the safer choice.
How much raw fish can cats have?
None — raw fish is not safe for cats and should be avoided entirely. When in doubt, ask your vet.
Is raw fish safe for dogs too?
Verdicts can differ between species. See the dog answer for raw fish →
More meats & proteins for cats
By the CanMyPet Editorial Team · Reviewed against ASPCA Animal Poison Control, the American Kennel Club (AKC) and Pet Poison Helpline · Last updated June 22, 2026.
Sources
- ASPCA — People Foods to Avoid Feeding Your Pets
- American Kennel Club — Dog Nutrition
- Pet Poison Helpline — Poison List