TempoLife › Features › Can dogs and cats eat it? › human-tuna
Canned tuna (human food) and pets
Canned tuna (human food) is caution for dogs and caution for cats. Occasional only — mercury accumulates, and it is not a balanced meal. Cats especially should not live on tuna.
Not veterinary advice. If your pet has eaten something concerning — or shows vomiting, lethargy, tremors or seizures — call your veterinarian or a pet poison line immediately; waiting to see how it goes is the one thing that reliably makes it worse.
The reason
Occasional only — mercury accumulates, and it is not a balanced meal. Cats especially should not live on tuna.
Sources: ASPCA Animal Poison Control — toxic and non-toxic foods · WSAVA Global Nutrition Toolkit · checked 2026-09-03
Frequently asked questions
Can my dog eat canned tuna (human food)?
Caution. Occasional only — mercury accumulates, and it is not a balanced meal. Cats especially should not live on tuna.
Can my cat eat canned tuna (human food)?
Caution. Occasional only — mercury accumulates, and it is not a balanced meal. Cats especially should not live on tuna.
What do I do if my pet already ate it?
If it was a small amount of a low-risk food, watch for vomiting or diarrhoea. If it was a toxic one — or the amount was large — call your veterinarian or a pet poison line.
Macadamia nuts
Dogs: toxic · cats: caution
Avocado
Dogs: caution · cats: caution
Milk and dairy
Dogs: caution · cats: caution
Citrus fruit
Dogs: caution · cats: caution
Coconut
Dogs: caution · cats: caution
Peanut butter (no xylitol)
Dogs: safe · cats: caution
The pet log, kept simple
TempoLife tracks meals, walks and weight — for the humans and, with a habit, for the four-legged family too.