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My cat snatched a bite of pizza topped with anchovies and olives. Should I be worried?

Cats · Food safety

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

A single small bite is unlikely to cause poisoning, but there are several concerns. Anchovies are extremely salty, and the pizza likely contains oils, garlic, and onions, which are all problematic for cats. Watch for signs of salt toxicity, such as excessive thirst, vomiting, diarrhoea, or lethargy, in the next 24 hours. Ensure she has plenty of fresh water available. If she ate more than a tiny nibble or shows any concerning signs, a call to your vet is a good idea.

Anchovy — Food safety facts

Feed with care · Cats · full breakdown on the linked food page

Extremely salty, whether fresh or tinned. A tiny piece at most, and no oil-packed ones.

Dogs and cats carry the same rating (Feed with care), so the notes below hold for either pet.

Anchovy is not poisonous to cats, but it is easy to over-feed. Rich fat, salt or seasoning can bring on vomiting or diarrhoea within a day, and repeated large portions are a recognised trigger for pancreatitis.

If it ate some before you noticed, watch for vomiting, diarrhoea, loss of appetite, unusual tiredness or a painful, swollen abdomen over the next 24 hours. A one-off small amount in a healthy adult usually passes with water and rest; repeated exposure, a puppy or kitten, a senior, or a pet with an ongoing illness is a reason to call your vet the same day.

Why these cautions matter

A heavy salt load drives up thirst and urination, and in the worst cases leads to sodium ion poisoning, which is a genuine emergency.

The full verdict, portion guidance and serving notes are collected on the Anchovy food facts page.

Open the full food page: Anchovy food facts →