No Sushi for Simba! And 5 Other Human Foods Toxic to Cats

Human Foods Toxic to Cats

 cat staring at plate of food

What could be more natural than feeding your cat some fish, right?


Not all fish is good for kitty, and some types of fish, including raw seafood, can be very harmful to your cat.

It’s always tempting to offer your pets a little bit of what you’re having for dinner or to give them leftovers at the end of your meal. But some human foods can be very harmful to cats, and it is always better to feed them pet food.

To make sure you don’t accidentally feed your cat something that could make them ill, check out this list of 5 foods that are toxic to cats.

1. Milk and Cream

As with fish it might seem like the most natural thing in the world to give your cat a saucer of milk or a dish of cream.


Despite popular belief, cats are not designed to handle lactose in cow’s milk.

Dairy products can cause severe upset stomachs and diarrhea in cats. And if they are fed dairy products on a daily basis that can cause long term stomach troubles and dehydration.

Special cat milks are available that do not contain lactose, but cats are fine just drinking water.

2. Onions and Garlic

It might not sound like an obvious thing to feed cats but alliums (onions, shallots, garlic and chives) are found in a lot of human food. Think about what you have eaten this week, and you can guarantee that garlic and onions were present.

So if you have given your cat any scraps or leftovers from your dinner there is a chance it contained onions or garlic.

To humans these foods cause no problems at all, but a substance called thiosulphate that is found in onions can destroy red blood cells in cats. This can lead to anemia and further complications.

3. Chocolate

Cats wouldn’t usually choose to eat chocolate, but some pet owners might think they are giving their cat a treat by coaxing them into eating chocolate or candy.

Chocolate can be lethal to cats. It contains a substance called theobromine which can cause seizures in cats, and even kill them.

All chocolate contains theobromine, but dark chocolate and baking cocoa have the highest levels, and must be kept well away from pets.

4. Raw Eggs

Raw eggs can pose a salmonella risk to cats (and humans!) but there’s also a protein found in egg whites, called avidin.

When eaten raw, avidin can block the absorption vitamin B in the intestines, which can be very harmful to cats.

Cooking the egg whites changes the structure of avidin, rendering it harmless however.

5. Grapes and Raisins

Grapes and their dried version – raisins are another of the foods dangerous to cats.

Grapes and raisins can cause kidney failure in cats, even in small amounts.

This is why it is really important to not leave them lying around where cats may find them, or offer them to your kitty as a treat.

How Best to Avoid Food Toxic to Cats

The best way to avoid giving your pet foods that are toxic to cats, is to stick to feeding them approved cat food.

Remember human food is for humans, cat food is for cats!

For more tips on how to keep a healthy pet, check out our blog.