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Is it ok to feed your cat fish?



Feeding cats fish is generally not recommended for several reasons:

  1. Thiamine Deficiency: Fish contains an enzyme called thiaminase, which destroys thiamine (vitamin B1). Thiamine is essential for a cat's health, and a deficiency can lead to serious neurological problems, including seizures.

  2. Heavy Metals and Toxins: Fish, particularly those that are high up the food chain like tuna, can accumulate heavy metals such as mercury. Long-term consumption can lead to mercury poisoning. Additionally, fish can contain other environmental toxins that are harmful to cats.

  3. Allergies: Cats can develop allergies to fish. Symptoms of food allergies in cats include itching, skin infections, and gastrointestinal problems.

  4. Nutrient Imbalance: A diet too high in fish can lead to an imbalance in essential nutrients. Fish is low in certain important nutrients that cats need, such as taurine. Cats require a balanced diet specifically formulated to meet their unique nutritional needs.

  5. Hyperthyroidism Risk: Fish contains high levels of iodine, and excessive iodine intake has been linked to hyperthyroidism in cats, a condition that can cause weight loss, increased appetite, and hyperactivity.

  6. Addiction: Cats can become finicky eaters and may refuse other types of food if they are regularly fed fish. This can make it challenging to provide a balanced diet.


While occasional fish treats are generally safe, it’s best to feed cats a balanced diet formulated for their specific nutritional needs. Also adding fish oil, Omega 3s to the food is good for their skin and coat.

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