Is Coins dangerous for cats?
No. UK coins — particularly pennies minted after 1992 — contain zinc, which is acutely toxic to cats if swallowed. A swallowed coin can also obstruct the stomach or intestines. Either way it's an X-ray trip.
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Content compiled with reference to guidance from the Blue Cross, PDSA, Royal Veterinary College (RVC), Battersea, and Animal PoisonLine. This site does not provide veterinary advice — always consult a vet. Last reviewed: 27 September 2026.
Key facts
- Verdict: No — dangerous to cats. Coins should never be given deliberately.
- Category: Metal/object
- Onset: Signs can start hours to days — see the full timeline below.
- If it's already happened: Call your vet now, or the Animal PoisonLine on 01202 509000 (24/7, charges apply) — see the emergency steps below.
If your cat has just eaten coins
- Don't try to make the cat vomit — coins can damage the oesophagus on the way back up.
- Go to your vet immediately. X-rays are the next step.
- Bring a spare matching coin if possible so the vet can identify the likely composition.
- If you can't reach your vet, call the Animal PoisonLine on 01202 509000.
What's the full picture?
Post-1992 UK 1p and 2p coins are copper-plated steel, but older pennies and many foreign coins are higher-zinc alloys. When swallowed, stomach acid dissolves zinc into a form that's absorbed and can destroy red blood cells (zinc toxicosis).
Even a non-zinc coin is a physical hazard. A cat that swallows a coin may have vomiting, reduced appetite, and risk of intestinal obstruction.
This is much more common with kittens and young cats who play with small shiny objects. Coins on bedside tables and bottom of handbags are the usual route.
Symptoms to watch for
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Cat owner essentials
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Questions owners ask
How would I know if my cat has swallowed a coin?
You may not see it happen, especially with kittens batting coins around as toys. Watch for vomiting, lethargy, or reduced appetite over the following hours to days, and take any missing coin your cat had access to seriously enough to mention to your vet, since an X-ray can confirm it quickly.
How long does it take for zinc poisoning to develop after a coin is swallowed?
It isn't immediate — stomach acid needs time to dissolve zinc out of the coin, so early signs are often just vomiting, lethargy, and reduced appetite over hours to days as a physical irritant. The more serious zinc-induced red blood cell destruction (haemolysis), showing as pale or yellow gums and collapse, tends to develop over subsequent days, which is why a coin lodged in the stomach shouldn't be left to 'wait and see' — removal before zinc dissolves out is much safer.
Are there safer alternatives to coins as cat toys?
Purpose-made cat toys — balls, wand toys, or crinkle toys designed for batting — satisfy the same play instinct without the zinc-toxicity and obstruction risk of a swallowed coin. Keep loose change in a closed drawer or dish out of paw's reach, especially in homes with kittens.
A bitter deterrent spray makes cables, bin lids, and cupboard edges taste unpleasant without harming your cat.
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Related
Sources referenced for this guidance
- Veterinary Poisons Information Service (VPIS) — UK clinical toxicology reference used by vets
- International Cat Care — feline-specific clinical guidance
- BSAVA — British Small Animal Veterinary Association reference materials
- Merck Veterinary Manual — professional veterinary reference
About this guidance
Every entry on this site is compiled from published UK veterinary toxicology sources — International Cat Care, Veterinary Poisons Information Service (VPIS) references, RCVS-registered practice materials, and peer-reviewed feline medicine literature. Where the evidence is mixed, we err on the cautious side because cats are unusually sensitive to many common substances that are harmless to humans and even to dogs.
This is general information written for UK cat owners. It is not personalised veterinary advice for your specific cat, their age, weight, medical history, or the exact exposure you're dealing with. If your cat has eaten something or is unwell, call your vet first. The Animal PoisonLine on 01202 509000 is available 24/7 for a small fee and can tell you whether an emergency visit is needed.
Entries are reviewed and updated as new research emerges. Spotted an error? Let us know — corrections are investigated and applied within 24 hours. For more context on how we work, see about and our full disclaimer.
Last reviewed: · By the What Can My Cat Eat? editorial team