Avoid

The foods listed here are not toxic to companion animals, but do not offer any nutritional value for them. Feed them to your pets sparingly, or refrain from using them in homemade meals or treats.
why you shouldnt feed tuna to your pets
Food Facts

Tuna: The Seafood That Slowly Poisons Pets

It may be loaded with omega-3s and other nutrients, but giving this food to your pet can cause unseen damage — it contains a toxin that accumulates in their body. Give your pets these safer options instead.
6 min read