Why?
Raw fish can carry parasites and bacteria, and some fish contain thiaminase, an enzyme that destroys vitamin B1, which cats can't do without. Sushi rice is seasoned with sugar, salt and vinegar, soy sauce is extremely salty, and wasabi or pickled ginger irritate the mouth and stomach. Some rolls also contain avocado, imitation crab or spicy mayo.
How much?
Don't give your cat sushi or sashimi. If they're begging, a small piece of thoroughly cooked plain fish, with no bones, is the right answer.
The risks
- Parasites and bacteria from raw fish
- Vitamin B1 deficiency if raw fish becomes a habit
- Salt overload from soy sauce
- Mouth irritation from wasabi
- Vomiting and diarrhea
Your cat ate some: what now?
If your cat ate several pieces, soy sauce or wasabi, call your vet without waiting for symptoms and don't try to make them vomit. A single piece of raw fish stolen once is low risk: watch for vomiting, diarrhea or lethargy for 48 hours.
Better options
Cook a small piece of salmon or tuna separately, with no salt or seasoning, and serve it boneless. Cooked, peeled shrimp is another favorite.
Common questions
Can cats eat sushi-grade salmon?
It's better not to. Sushi grade isn't an official safety standard, raw fish can still carry parasites or bacteria, and eating it often can lead to a vitamin B1 deficiency. Cooked salmon is a great treat instead.
Can cats have soy sauce?
No. Soy sauce is extremely salty, and a cat's small body handles salt poorly. A lick isn't an emergency, but a larger amount can cause serious salt poisoning.
This information is general and does not replace advice from a veterinarian. If your cat has swallowed something toxic, call your vet or an animal poison control center right away, without waiting for symptoms.