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

Share

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

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

Why Chicken Bones Are More Dangerous for Cats Than Most Parents Realize

Chicken bones seem harmless enough, but for cats, they can cause serious damage quickly. Whether your cat swiped a piece off the counter...

Fantastic Pet Pantries and Where to Find Them

Let’s face it: times are really tough right now, and those of us in the 99% are struggling with the cost of just...

Ask Dr. Paola – Help! My Cat Refuses to Drink Water! (April 13, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Why Healthy Cats Still Vomit Sometimes (And How to Respond)

A cat that just vomited needs a specific kind of care, and the feeding decisions you make in the next few hours actually...

More related

How to Train a Barn Cat: 10 Easy Steps

Barn cats are common in almost every barn across the United States and other countries. They’re usually mixed-breed cats that are a bit...

25 Essential Products to Spoil Your Cat (2026 Update)

Though the holidays are right around the corner, you never need an excuse to spoil your kitty. Our cats give us so much—companionship,...

Can a Neutered Male Cat Still Get a Female Pregnant? Vet-Verified Facts

Neutering or spaying your cat is a crucial part of responsible pet ownership. It prevents accidental litters, some behavioral problems, and reproductive conditions...

Can Cats Eat Feta Cheese? Vet-Approved Risks & Alternatives

It’s a common scenario: you’re enjoying a delicious snack or meal, and your feline friend gazes up at you with those pleading eyes...

Keep reading

How to Care for an 8- to 12-Week-Old Kitten (Vet-Verified)

Eight to ten weeks old is usually when many breeders and shelters let you take your kitten home, and while they’re certainly adorable at this age, they also have some additional care requirements. It can be a lot to keep...

Can Two Female Cats Get Along? Vet-Verified Info & Introduction Tips

If you already have a female cat at home and are considering adopting another cat, you may wonder how to make the transition as smooth as possible for your furry family member. Would your cat be happier with a male...

Can Two Female Cats Get Along

Why Do Cats Like the Sun? 6 Reasons & Safety Tips

One of the funniest and quite fascinating habits of cats is their love of sunbathing. It is a great sight to see cats sprawled out in the sun or basking in the warmth of a sunny window. But why do...

cat stretching a rocky beach and a beautiful sunset over the ocean

Why Do Cats Meow at Night? Vet-Approved Reasons for This Behavior

Cats are unpredictable animals. One minute, they are snuggling up on your lap, and the next minute, they are trying to scale the bookshelves in your living room. One habit that some cats enjoy or are compelled to do is...

Cat meowing

Cat Ear Communication: Ear Positions & Vet-Verified Meanings

Sometimes, you really want to know what your cat is thinking and feeling. Unfortunately, our favorite felines can’t speak to us to tell us what’s going on in their heads. However, they can still communicate with us; they just mostly...

Bengal cat like a leopard sneaks Indoor

Are Tortoiseshell Cats Hypoallergenic? Vet-Approved Facts & FAQ

Between 10% and 20% of people globally are allergic to cats. If you suffer from cat allergy but can’t resist the charm of Tortoiseshell cats, you might wonder whether they are hypoallergenic. Unfortunately, no. Tortoiseshell cats are not hypoallergenic and...

a tortoiseshell cat sitting on a wood

Do Cats Kill Rats? Vet-Reviewed Facts & Efficacy

Cats are well-known for their hunting prowess, but some cats are more talented at this skill than others. When humans began farming several thousand years ago, they depended on cats to protect their harvest from rodents. This relationship eventually led...

can cats kill rats

4 Cat Calming Collar Side Effects You Need to Know (Vet Reviewed)

Cats can be anxious or scared animals, especially in stressful situations. There are lots of things that people rely on to help manage their cat’s anxiety, and one of the most popular is a calming collar. These collars are sold...

cat wearing a purple calming collar

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.