Guide to Human Foods That Are Toxic to Cats - And When to Seek Emergency Vet Care
Many foods that are safe for people can be harmful to cats. While some cause mild stomach upset, others can lead to serious illness or even be life-threatening.
Cats are generally less likely than dogs to eat unusual foods, but even small amounts of some foods can be dangerous. If you think your cat has eaten a toxic food, contact your vet immediately. Early treatment can significantly improve the outcome.
Common Human Foods That Are Toxic to Cats
Many everyday foods can be harmful to cats. The list below includes some of the more commonly encountered foods, but it is not exhaustive. If you think your cat has eaten any potentially toxic food, contact your vet for advice.
Common examples include:
Chocolate
Caffeine (including coffee, tea and energy drinks)
Onions, garlic, leeks and chives (all members of the allium family)
Grapes, raisins, currants and sultanas
Alcohol
Mouldy food
Yeast dough
Signs of Poisoning in Your Cat and What to Do
The signs of food poisoning vary depending on the type of food and the amount eaten. Some cats become unwell within minutes, while others may not develop signs for several hours.
Common signs include:
Excessive drooling
Tremors or seizures
If you know or suspect your cat has eaten a toxic food, contact your vet immediately, even if they are not yet showing any signs of illness.
What to do if you suspect poisoning
If you think your cat has eaten a toxic food:
Prevent your cat from eating any more of the food.
Keep the food packaging, if possible.
Contact your vet immediately for advice.
Tell your vet what your cat has eaten, approximately how much and when.
Follow your vet's advice.
Human Foods – Poisoning Prevention Tips
You can reduce the risk of food poisoning by:
Keeping potentially toxic foods out of your cat's reach.
Storing food securely and keeping bins closed.
Never intentionally feeding foods that are known to be toxic to cats.
Asking family members and visitors not to give your cat human food.
Promptly clearing away food waste and leftovers.
Written by Gill Burkhill, Veterinary Surgeon, Animal Trust Vets CIC | Published July 2026 | Review date July 2029 | This advice is for UK pets only and is not a replacement for seeing a vet