Can cats eat raw fish?
Raw fish can contain thiaminase, an enzyme that destroys vitamin B1; deficiency causes neurological signs and seizures in cats. Cooking destroys thiaminase (Merck), and raw diets are not recommended because of germs (Cornell).
Better choices, for example
Sources
- Merck Veterinary Manual – Nutritional Requirements of Small Animals
- Cornell Feline Health Center – Feeding Your Cat
Last checked: October 2026