Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Can Cats Eat Pizza? Vet-Reviewed Nutrition & Safety Advice

Can Cats Eat Pizza

Does your cat like to snuggle up to you on pizza night? Perhaps they’d love a little piece with melted cheese, tomato sauce, and pepperoni? Pizza is a popular food, so there is a possibility some of our cats may get the chance to take a sneaky bite at some point in their lives.

But the question is, should you indulge your little furry friend? Is pizza safe for cats to eat? Probably not!

divider cat faces oct 2024

Can Cats Have Pizza?

Pizza looks tasty from a cat’s point of view, especially if it’s loaded with plenty of cheese and meat. So, will it do your kitty any harm, or can you go ahead and indulge them with a little taste?

Sadly, it’s probably not such a good idea. Some of the ingredients aren’t going to do your cat any favors, and others could even make your cat pretty sick. That’s not something any loving cat parent wants to risk.

While a tiny piece of pizza likely won’t damage your cat permanently, it’s not something you want to get into the habit of feeding them, even if they seem to like it!

Can Cats Eat Pizza
Image by: Shutterbug75, Pixabay

Interesting Facts About Pizza

In America, 350 slices of pizza are ordered every single second! The word “pizza” has existed since 997 A.D., when it was first used in Gaeta, Italy. Pepperoni is the most popular pizza topping in the U.S.A., closely followed by sausage.

What Does Pizza Contain?

Pizzas can have numerous ingredients, but given that pepperoni is one of the most popular varieties, let’s use that as our example.

Pizza Dough

Pizza dough is, of course, full of carbohydrates, which your cat does not need as an obligate carnivore. It’s also calorie-dense, so your cat could pile on the pounds and get little nutritional benefit. Once the pizza dough is cooked, while it’s not great for your cats, it won’t do them too much harm.

Raw pizza dough, on the other hand, is dangerous. The activated yeast can make the dough expand in your cat’s stomach. This can result in bloat, a serious condition requiring immediate veterinary attention. Also, the alcohol produced by the yeast as it ferments can make its way into your cat’s bloodstream and cause alcohol poisoning. This may lead to seizures, coma, and death in some cases.

Pizza dough also contains sodium. You can probably guess that pizza provides way more than your cat needs, into potentially dangerous levels, depending on the amount they may eat.

Now, let’s look at the toppings.

white pizza dough on brown wooden table
Image Credit: Phil Hearing, Unsplash

Tomato Sauce

The tomato sauce used on most pizzas is not something your cat should be eating regularly. It’s packed with ingredients that taste pretty good to us but can cause your delicate cat many problems.

The green parts of tomato plants are considered poisonous to cats due to a compound called tomatine, but the ripened fruit used in our pizza sauce shouldn’t cause your cat too many problems if consumed in small quantities. That’s good news, but the other ingredients used in most sauce recipes are more problematic.

Many pizza sauce recipes contain onions, and they’re also used as a topping. Onions are toxic to cats since they can cause gastroenteritis and anemia. Another common ingredient is garlic, which is poisonous to cats and roughly five times worse than an onion. Garlic is listed on the Pet Poison Helpline as causing the following signs if consumed:

  • Vomiting
  • Diarrhea
  • Abdominal pain
  • Pale gums
  • Drooling
  • Lethargy
  • High heart rate
  • Collapse

These signs can take a few days to show up if the amount of garlic is small, so speak to your vet immediately if you suspect your cat may have eaten a piece of particularly garlicky pizza.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

Cheese

The high-fat content of cheese is part of what makes it taste so good! Unfortunately, it’s not good for your cat, and another good reason is that you should avoid feeding them pizza. A 10-pound cat needs roughly 200 calories per day, but a reasonably small amount of cheese, let’s say 28 grams, on a piece of pizza can contain 104 calories.

Feline obesity can predispose cats to breathing, urinary, and joint problems. So, feeding your cat pizza that’s dripping with cheese is not a good idea. Due to their digestive system being designed to process meat and meat only, cats are lactose intolerant. Feeding your cat cheese can give them an upset stomach, and cheese is also high in sodium.

pizza, cheese, mozzarella
Image Credit: riquebeze, Pixabay

Pepperoni

So, can cats eat pepperoni or is this another ingredient to avoid? Unfortunately, pepperoni is not good news for cats. While it might contain plenty of ingredients that make it taste pretty fabulous to some humans, the ingredients could potentially harm your cat.

We briefly touched on the fact that pizza dough and cheese have sodium earlier, but so does pepperoni. Pepperoni contains huge amounts of salt, which is poisonous to your cat in large quantities. One small piece of pepperoni, weighing 2 grams, contains around 31 milligrams of sodium.

That might not seem that much, especially for a fully grown human. But when we compare it to a cat’s daily sodium requirement of around 10 milligrams per kilogram (or 2.2 pounds) of body weight, that one little slice of pepperoni contains more sodium than your cat should be eating in one day. However, it takes a large amount of salt (2 to 3 grams per kilogram) to cause signs of toxicity.

When considering the sodium content of a whole slice of pizza (though your cat isn’t likely to eat that much, or at least, we hope not), the numbers get astronomically high compared to your cat’s daily requirements.

One slice of a 14-inch pizza, judged by the USDA to weigh 107 grams, contains 640 milligrams of sodium. That is way too much to be consumed safely by your cat.

Salt poisoning can happen, with signs including:
  • Tremors
  • Lethargy
  • Vomiting
  • Diarrhea
  • Excessive thirst
  • Incoordination
  • Decreased appetite
  • Excessive urination
  • Seizures
  • Coma

We’ve already touched on the garlic that may be hiding in the tomato sauce on your pizza, but pepperoni also contains garlic. To preserve pepperoni and give it a long shelf life, nitrates are added. They can also be harmful to cats if consumed in large enough amounts.

Other than garlic, pepperoni can contain other additives and spices that are unsafe for your cat and may irritate their mouth and cause drooling and a stomach upset. Pepperoni is quite fatty and will add calories to your cat’s diet that they don’t need. Not to mention all the possible harmful ingredients we have already discussed.

divider cat faces oct 2024

Summing Up

We’re sure that by now, you’ve figured out that pizza is not a good food to feed your cat, even as an occasional treat. Almost all the ingredients used to make pizza contain something that can potentially harm your cat if they eat even very little of it.

From calorie-dense cheese to garlicky sauce and salty or spicy pepperoni, pizza is best enjoyed by humans, not our cats. If you’ve seen your cat eat a large amount of pizza by mistake or exhibit any of the signs we listed above, reach out to your veterinarian or the Pet Poison Helpline immediately.

As pet parents, it’s our responsibility to ensure that our cats eat a diet that provides all the nutrients they need to stay healthy. You’ll have to break it to them that it doesn’t include pizza!

See also:

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Cat Blood Types: How to Find Out (Vet-Approved Guide)

If you’ve ever given blood before or had surgery, you probably know your blood type. Humans have four blood groups—A, B, AB, and...

How Many Bones Do Cats Have? Vet-Approved Feline Anatomy Explanation (With Infographic)

Your average house cat has around 230 bones in their body. That’s quite a few more than the 206 bones in a human’s...

Take Your Cat to Work Day 2025: When & What Is It

Cats can be incredibly affectionate. They rub their heads on our faces, make biscuits on our legs, and cheer us up after a...

Fancy Feast Cat Food Review in 2025: Recalls, Pros & Cons

Review Summary If you’ve been researching cat foods, you’ve probably seen the name Fancy Feast. This well-known brand has been around since 1982...

More related

At What Age Do Cats Start Getting Arthritis? Vet Reviewed Early Signs & Recommendations

Being a cat owner includes dealing with various health conditions, particularly as they age. One common condition in senior pets is arthritis, which...

How to Cat Proof a Balcony: 5 Vet-Approved Tips

Balconies can be a huge source of anxiety for cat owners. It’s just so easy for our furry friends to, well, fall off....

Are Cat Videos Good for Cats? What Science Says & Vet Approved Safety Tips

There are tons of cat videos on the internet. There are millions of Google searches for cats every month. So, it’s safe to...

9 Tips for Helping Your Cats Adjust to a Smaller Space in Your New Home

Moving always has its hassles, and downsizing only adds to the stress. Figuring out how to consolidate adds tough decisions to an already...

Keep reading

Can Cats Drink Distilled Water? Vet-Reviewed Facts & FAQs

If you’re unsure about the quality of your tap water, you may be concerned about drinking it yourself or offering it to your cat. Distilled water is an alternative to tap water, but can cats drink distilled water, and is...

Can Cats Drink Distilled Water

Do Kittens Sleep a Lot? Vet-Reviewed Facts & FAQ

There’s nothing quite like the angelic and innocent sight of a sleeping kitten. Kittens of all breeds spend their days learning, growing, playing, eating, and snoozing, and they’ll spend the rest of their lives doing these same activities even as...

kittens sleeping

My Cat Purses Their Lips When They Poop, What’s Going On? Vet-Verified Reasons (With Infographics)

Cats express how they’re feeling in subtle ways, which can be difficult for humans to pick up on. Sorting out signs of illness and discomfort in cats can be difficult, partly because they’re evolutionarily programmed to hide indications they’re not...

cat pooping in a yellow litter box

How to Calm an Anxious Cat: 5 Vet-Approved & Effective Methods

While cats are often seen as independent and enigmatic creatures, they can also experience anxiety, and it can have a profound impact on their well-being. If your once playful and confident feline companion starts to show signs of being unwell—such...

Domestic cat lying on owner's lap

Can Cats Eat PopTarts? Vet-Reviewed Facts & FAQ

“Curiosity killed the cat” is a phrase that couldn’t be truer about some cats. It seems like you can’t leave them alone for more than a minute before they’re face first in something they’re not supposed to touch. The good...

Can Cats Eat PopTarts

Are Cats Monogamous? Vet-Verified Mating Practices

It might be a sweet idea to get two cats that you’re sure are going to fall in love and live happily ever after together. Unfortunately, that type of love and relationship is not in a cat’s DNA. Cats are...

two different cats standing side by side outdoors in the garden

How to Keep My Cat from Using the Dog Door: 10 Vet-Verified Tips & Tricks

Cats are curious creatures, and they can become attracted to using the dog door for various reasons, such as exploring new areas, following their canine siblings, or seeking an escape route. However, allowing your cat to use the dog door...

cat looking curiously on the pet door

Can Cats Eat Garlic? Vet-Reviewed Risks & FAQ

Few foods are as popular and as potent as garlic. We use garlic to imbue its delicious, savory flavor into our foods, and millions love the bulbous, flowering plant. However, if you’re a cat owner, you might wonder if your...

Can Cats Eat Garlic