Garlic has to be the number one reason NOT to feed your cat pizza, or allow him/her to steal it. Why? Garlic is poisonous to cats, kittens, and even dogs. Most pizza has this as an ingredient in the sauce, even if you did not order a garlic pizza.
Speaking of sauce, nightshade plants are highly poisonous to cats. Yes, I am referring to tomatoes. The leafs and stems of a tomato plant can lead to death, and eating unripened tomatoes (green ones) are highly poisonous. The good news is that most of the harmful chemicals found in tomatoes themselves are gone when the tomato has been fully ripened but you have to remember that cats are much, much smaller than us. Cooking also dissolves most of the poisons as well. So sauce, while it is not considered poisonous, it can cause intestinal distress and in high doses, can be poisonous.
Most meats found on pizza also have Italian styled seasoning which includes more garlic, and onion. Have I mentioned how dangerous onions are for cats? Much like garlic, a small amount is enough to kill a cat. Anything in the onion family is considered hazardous to cats so be careful!
I don’t need to mention how fattening pizza is to you, but you may need to lecture your cat! Most standard pizza contains HIGH amounts of fat that can not only cause your cat to pack on the pounds, but these particular fats increase the chances of feline diabetes. The fats in the cheeses, oils, and meats are the worst but don’t think for one second that the crust is a-oh-kay!
Yeast is something that cats, in general, have a hard time digesting. While cooked breads and dough are considered to be harmless to your cat, raw yeast can kill a cat in a matter of hours. Most cats will not eat pizza dough uncooked or even cooked, UNLESS it is loaded with butter and oil. My cat Twiggy LOVES the smell of pizza and garlic bread, and I have caught him eating both in the past so be very careful if your cat’s go on your tables and counter spaces. Never leave pizza sitting out. Better yet, put it away soon as you are done and throw away any unwanted leftovers (bag it before you put it in the trash).
While the internet will mostly agree, cats stealing pizza is absolutely adorable, it is far too dangerous to be laughing and aww’ing at. Do not encourage your cat to eat pizza. If your cat accidentally gets a hold of some pizza, do not panic. Make sure they drink plenty of water and keep an eye on them for a few days to make sure they are not sick. If your cat ate pizza and becomes poisoned, you will know with in 6 hours, as symptoms will start to erupt (vomiting, crying, diarrhea, panting, and fatigue).
I am guilty of giving cheese off of my pizza to my cat, if you do this, get the sauce off first and don’t give them a lot. I must also note that 95% of the time, my pizzas are plain. Be careful with specialty pizzas as the cheese may contain garlic. Remember, you are fully responsible for what your cat can eat.Better to be safe than sorry!