Can dogs and cats eat Raw fish (for cats)?
DogOnly with care
CatOnly with care
Some raw fish contains thiaminase, an enzyme that destroys vitamin B1; cats fed lots of raw fish can develop thiamine deficiency. Raw fish may also carry bacteria and parasites.
Why
Thiaminase (destroys thiamine/vitamin B1); bacteria, parasites; bones
Signs to watch for
- loss of appetite
- vomiting
- wobbliness
- head tilt or abnormal posture
- seizures (severe thiamine deficiency)
Good to know
Occasional small amounts of cooked, boneless fish are fine. Problems come from raw fish as a regular part of the diet.
Sources
Sources
- Merck Veterinary Manual – Nutritional Disorders of the Spinal Column and Cord (thiamine deficiency)
- Cats Protection – Cats and human foods
- ASPCA – People Foods to Avoid Feeding Your Pets
Checked against these sources in October 2026.