Meat & fish
Can cats eat tuna?
As a treat only. Cats love tuna, but a diet heavy in it can lead to mercury build-up and a lack of other nutrients.
Why Mercury (builds up over time)
By Maya Hart
If your cat ate some
- A small amount usually causes nothing worse than a mild stomach upset.
- Offer water, skip the next treat and call your vet if vomiting or diarrhoea lasts more than a day or your pet seems unwell.
How much, how often
A teaspoon, occasionally.
Treats of any kind should stay under 10% of the day’s calories. Work out your pet’s calories
Serving it safely
- Choose tuna in spring water, not oil or brine
- Drain well
Dogs and cats, side by side
Dogs In moderation
A little. Tuna is not toxic, but it contains more mercury than smaller fish, so keep it occasional.
How much: A tablespoon of tinned tuna in water, once a week.
Can dogs eat tuna?Cats In moderation
As a treat only. Cats love tuna, but a diet heavy in it can lead to mercury build-up and a lack of other nutrients.
How much: A teaspoon, occasionally.
Safer treats your cat can have instead
Questions owners ask
Can cats eat tuna?
As a treat only. Cats love tuna, but a diet heavy in it can lead to mercury build-up and a lack of other nutrients.
How much tuna can a cat have?
A teaspoon, occasionally.
What makes tuna risky for cats?
Mercury (builds up over time).
What should I do if my cat ate tuna?
A small amount usually causes nothing worse than a mild stomach upset. Offer water, skip the next treat and call your vet if vomiting or diarrhoea lasts more than a day or your pet seems unwell.
Is tuna safe for dogs too?
A little. Tuna is not toxic, but it contains more mercury than smaller fish, so keep it occasional.
Sources
Tailwise is for general information and is reviewed by veterinary professionals, but it is not a substitute for advice from your own vet, who knows your pet. How we check facts