Milk / Diary

It is a common assumption that it is ok to feed cats milk. We’ve all seen people giving cats milk on TV or in stories.  However, milk and dairy products can cause digestive problems because cats are lactose intolerant. Giving a cat milk will likely result in an upset stomach and diarrhea.

Onions / Chives / Garlic

Cats should not be allowed to eat onions, chives, or garlic. These foods will cause digestive upsets. If fed long term, these foods will cause anemia in your cat. Read labels carefully on anything you fed to your feline friend to ensure onions and garlic are not in the product.


Another misconception is that it is ok to feed your cat tuna.  However, tuna, as sold for human consumption, can cause severe discomfort for your cat from inflammation of the body’s fat. Some cat foods contain tuna, however, this type of tuna is safe for your pet.

Raw Fish

Raw fish is another food that your cat should not be fed. Cats consuming raw fish can result in a Thiamine deficiency, which in turn can cause neurological problems or lead to convulsions. Digestive upset is also a common occurrence when feeding cats raw fish.


No pet should be given alcohol, period.  In cats, alcohol can cause alcohol poisoning and can even be lethal to kittens. Even a small amount of beer, wine, or liquor can cause turmoil to your cat, so when you accidentally spill that beverage, get it cleaned up rather than letting your pet clean it up for you.

Grapes / Raisins

Grapes and raisins can cause kidney failure in cats.  Early signs of kidney failure include vomiting and abnormal hyperactivity. Be sure to store grapes and raisins out of your cat’s reach.

Chocolate / Caffeine

Most people know that chocolate is dangerous for dogs, but it is just as dangerous for cats and can even be lethal. Theobromine is the chemical within chocolate that causes the issues and can be found in most types of chocolate. Chocolate consumption by cats can cause abnormal heart rhythm, tremors, seizures, and even death.

Raw Eggs

Raw eggs contain a certain protein that can cause a vitamin B deficiency in cats, which, in turn, can also cause aggressive skin issues.  Raw eggs also carry the risk of your cat consuming E.coli, a bacteria causing food poisoning – and no one wants food poisoning!

Dog Food

Dog food is not equivalent to cat food. When a cat is fed dog food the proper amount of proteins and other nutrients are not present. Cats need different amounts of proteins and vitamins than dogs do. Feeding only dog food to your cat can lead to malnutrition and other health problems.


Very small amounts of liver are ok to feed your cat on occasion, but too much liver may lead to vitamin A toxicity. Vitamin A toxicity causes degeneration of the bones that can lead to deformations, growths on the bones, and osteoporosis, and in some cases death.