15 Everyday Foods That Are Toxic to Cats (Keep These Away From Your Kitten)

It's one of the most loving things we do - sharing a little nibble of whatever we're eating with a hopeful, wide-eyed kitten. But some of the most ordinary items in your kitchen are genuinely dangerous, and a few are downright toxic. Knowing the foods toxic to cats is one of the simplest, most important things you can do to keep your fur-baby safe.

The tricky part is that many of these foods seem harmless, or even traditional treats. (That saucer of milk? Not the kindness it looks like.) Cats are also much smaller than us, so a dose that wouldn't bother a person can do real harm to a kitten.

Below is a clear, at-a-glance danger list, followed by the why behind each one - and, crucially, exactly what to do if your cat eats something she shouldn't. Treat your pantry and medicine cabinet like you would around a curious toddler: closed, latched and out of reach.

Foods toxic to cats: the at-a-glance danger list

The short answer: the most common foods toxic to cats are onions, garlic and chives; chocolate, coffee and tea; alcohol and raw yeast dough; grapes and raisins; xylitol; and most human medicines. Dairy, bones, fatty scraps and raw meat or fish are also best avoided. Keep this list handy:

• Onions, garlic, chives, leeks (and powders/seasonings containing them)
• Chocolate, coffee, tea, energy drinks (caffeine & theobromine)
• Alcohol and raw bread/yeast dough
• Grapes and raisins
• Xylitol (a sweetener in gum, candy and some peanut butters)
• Human medicines of all kinds
• Milk, cheese and other dairy
• Cooked bones, raw meat, raw fish, raw eggs
• Fatty trimmings (bacon, sausage)
• Excess tuna and too much salt

Now let's look at why each one is a problem - and how worried to be.

Onions, garlic and chives

These kitchen staples - along with leeks and shallots - belong to the allium family, and they're some of the sneakiest dangers because they hide in so many cooked dishes, sauces, baby food and seasonings. In cats, alliums can damage red blood cells and lead to a serious condition called anaemia.

All forms count: raw, cooked, dried and powdered (garlic and onion powder are actually more concentrated). This means a bite of your garlic-buttered toast or onion-rich leftovers isn't a safe treat. Keep seasoned human food away from your kitten entirely.

Chocolate, coffee and tea

Chocolate contains theobromine and caffeine, both of which cats process far more slowly than we do. Coffee, tea and energy drinks add even more caffeine to the mix. These stimulants can affect a cat's heart, nervous system and stomach.

Darker chocolate is the most dangerous because it's richest in theobromine, but no chocolate is safe for cats. Keep mugs of coffee and tea out of paw's reach too - a curious kitten lapping from your cup is more common than you'd think.

Alcohol and raw yeast dough

Alcohol is toxic to cats even in small amounts, affecting the liver and brain quickly given their size. Never leave alcoholic drinks where a kitten can sample them.

Raw yeast dough is a double hazard: it can keep rising in the warm stomach, causing painful bloating, and the fermenting yeast produces alcohol inside the body. If you bake, keep proving dough well out of reach.

Grapes and raisins

Grapes and raisins are well known for causing kidney problems in dogs, and they're firmly on the "never feed" list for cats as well. The exact toxic substance isn't fully understood, and sensitivity seems to vary, which is precisely why caution is the only safe approach.

Watch out for hidden raisins too - in cookies, cereal bars, baked goods and trail mix. If you drop one on the floor, scoop it up before your kitten investigates.

Dairy and the "saucer of milk" myth

Here's the storybook image we all grew up with: a happy cat lapping a bowl of milk. The reality is that most adult cats are lactose intolerant. After kittenhood they lose much of the enzyme needed to digest milk sugar, so cow's milk, cream and cheese often cause stomach upset, gas and diarrhoea - and the litter-box problems that follow.

It won't usually poison your cat, but it's far from the treat it appears to be. Your kitten doesn't need dairy at all; fresh water is what she truly wants. If you'd like a milky-style treat, pet shops sell special lactose-reduced "cat milk," but even that should be an occasional indulgence.

Bones, fat trimmings and raw meat

Cats are carnivores, so it's tempting to share meat - but a few forms carry real risks:

• Cooked bones can splinter and cause choking, mouth injuries or dangerous blockages and tears in the gut.
• Fatty trimmings like bacon and sausage can trigger digestive upset and, over time, contribute to weight problems.
• Raw meat, raw fish and raw eggs can carry bacteria such as salmonella, and raw fish in quantity can interfere with vitamin absorption. It's safest to feed only properly cooked, plain, unseasoned meat as an occasional treat.

Stick to a complete kitten food as the foundation of her diet. If you're unsure how meat treats fit in, our complete kitten feeding guide walks through the 10% rule and which plain cooked foods are fine in small amounts.

Xylitol and human medicines

Xylitol is an artificial sweetener found in sugar-free gum, mints, candies, some baked goods and even certain peanut butters. It's extremely dangerous to pets, so always read labels and keep these products zipped away.

Human medicines deserve special caution. Common over-the-counter painkillers and many prescription drugs are highly toxic to cats, and their small bodies have far less margin for error. Never give your cat any human medication unless your vet has specifically told you to, and store all pills, including supplements, behind a closed door.

The simplest rule of all: if you're not certain a food or product is safe for cats, don't offer it - and keep it where curious paws can't reach.

Other hazards to watch

A few more items round out the list:

• Too much tuna: An occasional tiny treat of tuna in spring water is fine, but tuna in brine (salt water) and a tuna-heavy diet aren't. A diet built on tuna can lead to nutritional imbalances.
• Excess salt: Very salty human snacks (chips, cured meats) can cause excessive thirst and, in large amounts, sodium problems.
• Raw eggs: Besides bacteria risk, they contain a protein that can interfere with vitamin absorption.

Food isn't the only hidden danger at home, either. Many popular houseplants are toxic to cats - lilies especially can be fatal - so it's well worth checking our guide to houseplants toxic to cats while you're cat-proofing the kitchen and beyond. You'll find more on safe and unsafe foods in The Happy Kitten.

What to do if your cat eats something toxic

Even in the most careful homes, accidents happen. If you think your kitten has eaten something toxic, stay calm and act quickly:

1. Remove any remaining food or product so she can't eat more, and note what she ate and roughly how much.
2. Call your vet immediately - or an emergency vet or a pet poison helpline (in the US, the ASPCA Animal Poison Control Center and the Pet Poison Helpline are available 24/7; a consultation fee may apply).
3. Do not try to make her vomit at home unless a vet specifically tells you to. The wrong approach can make things worse.
4. Watch for warning signs while you get help: vomiting, diarrhoea, drooling, lethargy or weakness, loss of appetite, tremors, or breathing trouble. If you can, bring the packaging or a sample to your appointment.

Time matters with poisoning, so when in doubt, phone a professional rather than waiting to "see how she does." Many of these signs overlap with general illness, which is why it helps to know the broader signs your kitten might be sick too. The reassuring news: with your pantry latched, your plants checked and this list in mind, the vast majority of these emergencies simply never happen. A little prevention keeps your kitten safe - and lets you both enjoy mealtimes worry-free.

Frequently asked questions