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My cat licked a substantial amount of Caesar salad dressing off a plate—could the anchovies in it make her sick?

Cats · Food safety

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

Short answer

Yes, the anchovies in Caesar dressing could easily make your cat sick. Anchovies are extremely salty, whether fresh or tinned, and a substantial lick of dressing could mean a high sodium intake, leading to excessive thirst, vomiting, or even sodium ion poisoning in severe cases. The dressing may also contain garlic, onion, or other seasonings that are toxic to cats. Watch for signs like vomiting, diarrhea, lethargy, or increased urination over the next 24 hours. Offer plenty of fresh water to help flush out the salt, and if you notice any worrying symptoms, call your own vet for advice.

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 →