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 Pesto? Vet-Approved Risks & Safe Alternatives

Can Cats Eat Pesto

Pesto is a household staple used in various foods, such as salad dressing, pizza, and chicken—the possibilities are limitless! If you’re a cat owner, you may have noticed your feline nosing around when you bust out this sauce, but is it safe to let your cat have any? Sadly, no, cats cannot eat pesto.

Keep reading to learn why and what you can do to keep your cat safe from other harmful foods and household items.

divider 3 paws

What Ingredients Are in Pesto?

Pesto comes in several different varieties, such as classic basil, spinach, mint, red pepper, tomato, avocado, beet, and arugula, among many others. Basil pesto seems to be the most often used, but the most common flavor of pesto varies depending on where you live.

top view of a homemade pesto in a jar
Image Credit by: Tati Liberta, Shutterstock

divider single cat paw oct 2024

Why Can’t Cats Have Pesto?

The reason is simple: There are too many harmful and potentially toxic ingredients used to make pesto of any flavor. Let’s break down the common ingredients in pesto that are harmful or toxic to cats.

1. Garlic

Garlic is an absolute no-no for cats, dogs, and horses. Garlic is a member of the Allium family, along with shallots, onions, leeks, and chives, which also should be avoided. Garlic may serve health benefits for humans, but it certainly does not serve any health benefits for cats, dogs, or horses.

The toxic principle in garlic is N-propyl disulfide. If ingested, even in small amounts, it can cause vomiting, weakness, spiked heart rate, panting, blood in the urine, and hemolytic anemia, which is a breakdown of red blood cells. Luckily, cats don’t seem to want garlic, but it’s good to know as a cat owner to avoid it around your cat.


2. Pine Nuts

Pine nuts are not proven toxic, but that doesn’t mean your cat should eat them. Cats are carnivores, and their digestive systems are not designed to eat foods other than meat, which means your cat would have difficulty digesting them. Pine nuts are also high in fats, and if your cat consumes pine nuts, it could result in vomiting, diarrhea, and an upset tummy.

sick grey tabby cat
Image Credit: chie hidaka, Shutterstock

3. Basil

Basil is the most common type of pesto. Many different basil plants exist, and while they are not toxic to felines, they can cause GI issues if ingested due to a cat’s digestive system. Remember, cats are obligate carnivores, and their digestive systems are designed to digest only meat without issue.


4. Olive Oil

Olive oil is what gives pesto its sauce-like consistency. It has two kinds of fats, monounsaturated and polyunsaturated, and both are beneficial to a human’s health. However, while olive oil is non-toxic to cats, eating extra fat can cause tummy upset, vomiting, and diarrhea. Simply put, your cat does not need olive oil, and it serves no health benefit to them.

olive oil
Image Credit: Steve Buissinne from Pixabay

5. Parmesan Cheese

Parmesan cheese is made from cow’s milk, and most cats are lactose intolerant. Their digestive systems are not designed to handle dairy well. Parmesan cheese is also high in fat, which is another component that will do your cat no favors health-wise. If ingested, it may lead to GI issues.

divider cat faces 2 oct 2024

What to Do If Your Cat Eats Pesto

If you suspect that your cat ate pesto or even just garlic, a trip to your veterinarian is warranted. If your vet’s office is closed, you can call the Pet Poison Helpline, which is available 24/7.

This is box title
  • Vomiting
  • Diarrhea
  • Lethargy
  • Weakness
  • Pale gums
  • Decreased appetite
  • Increased heart rate
  • Difficulty breathing
  • Increased respiratory rate

The onset of signs can develop within 24 hours but they can also be delayed by a few days.

If your pet is showing these signs, we suggest you speak to a vet.

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

divider cats oct 2024

Tips for a Healthy Cat Diet

Your cat requires a nutritional and balanced diet. Feeding them a high-quality commercial cat food is ideal, as this type of food will have all the necessary nutrients your cat needs to be healthy. The food should provide your cat with energy and be vitamin and mineral rich. Since cats are obligate carnivores, the food should have high-quality protein and be free from fillers and preservatives.

Both wet canned food and dry kibble are available for cats, but offering wet canned food is an excellent way to keep your kitty hydrated, as cats typically don’t drink much water. If your cat is pretty good about drinking water, though, go ahead and feed them dry kibble if that suits your cat’s palate better.

maine coon cat standing next to feeding dish with wet pet food
Image Credit: Nils Jacobi, Shutterstock

divider single cat paw oct 2024

Final Thoughts

While pesto enhances many food items, you should refrain from giving any to your cat. It has ingredients that can harm your cat, and some are even toxic, like garlic. Your cat does not need pesto, and it serves no nutritional value in any way for them. Stick to a 100% complete and balanced diet for your cat to keep them healthy and happy.


Featured Image Credit by: smirart, Shutterstock

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

Can Cats Eat Crackers? Vet-Verified Facts & Safe Alternatives

Our feline friends expend so much of their energy during the day playing or hunting down food. The more active their bodies get,...

Can Cats Eat Crackers

Can Cats Eat Hamburgers? Vet-Approved Feline Treats

Cats are meat-eaters, and what is more carnivorous than a juicy burger made with ground beef, pork, chicken, or other meat? As long...

Can Cats Eat Hamburgers

10 Herbs That Are Safe for Cats (& Ones to Avoid) Our Vet Answers

It’s natural to want to fill your home and garden with sweet smelling flowers and fragrant herbs, but if you also share your...

cat with green eyes in catnip

Can Cats Eat Corned Beef? Vet Approved Risks & Nutritional Information

Cold corned beef and boiled cabbage may be a St. Patrick’s Day staple for many Americans, but unfortunately, this dish is another human...

Can Cats Eat Corned Beef

More related

Catster_Is Citronella Safe for Cats

Is Citronella Safe for Cats? Vet-Approved Facts & FAQ

Citronella is an excellent insect repellent, and its fresh citrus scent can be pleasant to have around our houses too. But many substances...

Can Cats Eat Seafood

Can Cats Eat Seafood? Vet Approved Facts & Health Guidelines

It’s a popular belief that cats love fish, even though fish are not a natural part of a feline’s diet. Some cats don’t...

Can Cats Eat Walnuts

Can Cats Eat Walnuts? Vet Approved Facts & FAQ

As a pet owner, you may already know that nuts are the arch-enemy of dogs. Cats aren’t the biggest fans of them either....

Can Cats Eat Pecan Pie

Can Cats Eat Pecan Pie? Vet-Approved Facts & FAQ

Pecan Pie is a delicious dessert traditionally served in the United States during the winter and fall. It is mouth-wateringly sweet and contains...

Keep reading

Why Does My Cat Lick the Wall? 5 Vet-Reviewed Reasons for This Behavior

Typically, cats use their tongues to clean themselves and lap up water. However, you may have noticed that your feline has taken a liking to licking the wall. From our perspective, there is no point in licking the wall at...

cat head_Goran Horvat_Pixabay

Do Cats Eat Squirrels? Is It Healthy for Them?

Cats are quirky animals, and you never know what they are going to do next. They don’t follow the pack or do what humans want them to do. So, even when we provide our kitties with an abundantly nutritional diet,...

squirrel-in-the-trees

Cat Lice vs Fleas: Vet-Reviewed Key Differences

Sooner or later, every pet owner will find tiny bugs crawling on their pet’s skin. But are they fleas or cat lice? It can be hard to tell the difference between the two small pests. Therefore, this article will teach...

Lice VS Fleas

Why Does My Cat Only Eat Wet Food? Vet Reviewed Facts & Suggestions

You know you’re a good cat parent when your low-budget can of soup costs less than your cat’s can of wet food, which is $3 a tin. Once you introduce wet food to a cat, some felines refuse to return...

Cat-eating-wet-tuna-food-from-the-white-plate

Can Cats Eat Pine Nuts? Vet-Reviewed Facts & FAQ

There are many safe and unsafe human foods that you could feed your cat. For humans, nuts are famous for their health benefits. Pine nuts in particular are great for boosting energy levels and keeping skin healthy. But are they...

Can Cats Eat Pine Nuts

Why Are Cats So Much Sassier Than Dogs? Vet-Verified Personality Traits Differences

Before attempting to answer whether cats are sassier than dogs, it’s important to ensure we’re all on the same page, as the term sassy is a bit imprecise. According to the Merriam-Webster dictionary, sassy has three meanings—impudent, lively, and stylish...

dog and cat on floor

How Do Cats Fall Asleep So Fast? Vet-Reviewed Feline Sleep Cycle

So, we’ve probably all used the term “catnap” to describe a short stretch of sleep that we take during the day. Perhaps it’s because cats are perceived as lazy, but anyone who lives with a cat knows that this is...

cute ginger kitty

Can You Catch a Cold From a Cat? Vet-Verified Facts & Info

Once cold and flu season hits, most people find themselves feeling pretty crummy at some point. As soon as one person in the household goes down with a fall or winter cold, it seems like only a matter of time...

teenager cat owner cuddling with pet cat