Can Guinea Pigs Eat Zucchini?

Can Guinea Pigs Eat Zucchini?
Risks and Benefits You Need to Know

Can guinea pig eat Zucchini

April 14, 2022

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You probably know that even though hay makes up the bulk of your guinea pig’s diet, it cannot survive on hay alone. Hay is an excellent source of all-important fiber, but it lacks in several vital nutrients and minerals.

Often the best way to supplement your pet’s nutrition is to add fresh fruits and veggies to their diet. It’s easy to look at the stuff we usually like to eat ourselves, but how do you know whether it’s safe for your guinea pig or not?

Leafy greens and veggies are an essential part of your pet’s nutritional needs, but not all vegetables are safe, and some are better than others.

Can Guinea Pigs Eat Zucchini?

Yes, guinea pigs can eat zucchini. It is a safe, nutritious, and low-calorie veggie to feed to your guinea pig. You can feed zucchini to your cavy up to 6-7 times a week but follow our vet-checked serving size recommendations because too much zucchini may lead to severe digestive upsets in guinea pigs.

Zucchini, also known as courgette, comes in several different varieties. All of them are safe for your guinea pig to munch on, and most guinea pigs like the taste.

Zucchini is very safe for your guinea pig to eat and is a great source of many of the nutrients and vitamins that guinea pigs need.
– Dr. Leonie McKinlay, DVM

If yours rejects it, though, don’t go off in a panic. Cavies do have individual tastes and can sometimes be picky. Besides, there are plenty of other healthy veggies you can feed to your pet too.

Some zucchini varieties have thick, hard seeds that your guinea pig will not be able to digest well, so they need to be removed before you serve. Zucchini skin is not actually toxic to guinea pigs, but most cavies don’t like the taste.

Zucchini is an excellent source of vitamin C, which your guinea pig needs on a daily basis. It also contains a lot of other useful nutrients that won’t be found in hay. But as with most foods, too much is not a good idea and may cause your pet some health problems.

Although veggies and fruits are a nutritious addition to your guinea pigs’ diet, about 80% of their daily food intake should consist of high-quality hay. Unlimited hay keeps them healthy by supporting their digestion and keeping their teeth trimmed. Make sure you are offering your pet the best hay possible. Learn more.

Health Benefits: Is Zucchini Good for Guinea Pigs?

Zucchini is a wonderful veggie for guinea pigs, and most will happily nibble on it. It contains a lot of useful essential vitamins and minerals that can help keep your pet in good overall health.

Excellent Source of Vitamin C

Vitamin C is a powerful antioxidant, and your guinea pig needs it to maintain a strong immune system, among other functions. But guinea pigs are not capable of manufacturing or storing this essential vitamin in their systems.

The only way your pet is going to get a sufficient amount of vitamin C to remain healthy is through its diet. A lack of vitamin C can lead to a condition known as scurvy that may even require your pet to be hospitalized.

Zucchini is a rich source of this all-important vitamin. For this reason alone, it is already an excellent addition to your guinea pig’s balanced meal plan.


Contains Essential Vitamin B6

Vitamin B6 is essential for your guinea pig’s health, no matter his size or age. This is yet another vitamin that your pet cannot manufacture within its own body, so you need to make sure it gets a sufficient amount in its food.

From helping in the creation of red blood cells and hemoglobin to playing a role in the metabolism of carbs, fats, and protein, vitamin B6 is needed for several crucial body functions. 

Zucchini is a good source of vitamin B6, making another good reason to add it to your pet’s diet.

Good Source of Vitamin A

Vitamin A is crucial for your guinea pig’s skin and eyes to remain healthy, especially as your pet gets older. It also has a role to play in supporting several body organs and the immune system.

Excessive vitamin A is not good for guinea pigs and poses a health risk, but zucchini contains just a little, so you don’t have to worry about your pet getting too much in one go.


This is an essential element and is very important in maintaining your guinea pig in good health. The main function of phosphorus is in the formation of strong, healthy bones and teeth.

But phosphorus also affects how the body uses carbs and fats and is needed to manufacture protein for growth and repair of various body cells. And together with the B vitamins, this mineral helps maintain healthy kidney function, muscle contractions, and more.

Zucchini is a great source of not only phosphorus but also most of the other trace elements, all except sodium. Feeding this veggie to your pet is a great way to provide a lot of different nutrients in one single serving.

Zero Sugar, Low Calories

We’ve already seen that zucchini is rich in vitamin C, vitamin B6, and phosphorus. It also contains many other essential nutrients, and has one significant advantage: there is no sugar involved and minimal fat.

Guinea pigs are prone to gaining weight, and too much sugar is not a good idea for other health reasons too. Zucchini is a great way to provide your pet with a lot of useful nutrition without worrying about feeding too many calories or too much sugar.

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Health Risks: Is Zucchini Bad for Guinea Pigs?

With all the excellent health benefits we’ve just gone through, you might be tempted to grab a zucchini from your fridge or garden, if you’re lucky enough to have one, and head straight for your pet.

It’s true that zucchini is overall a great, healthy veggie for your guinea pig to eat, but there are a couple of things to watch out for. 

Be Careful With Calcium Levels

Guinea pigs are one of a group of animals that cannot regulate their intake of calcium. Their digestive systems absorb almost as much calcium as they consume, no matter how much they’ve already absorbed.

This excess calcium binds with what are known as oxalates in your pet’s system and can lead to painful bladder stones that will require intervention from your vet to get rid of.

Zucchini contains relatively little calcium compared to some other veggies, so if fed in small amounts, there is no health risk. But feeding a lot of zucchini, especially for more extended periods or combined with other calcium-high veggies, can get the calcium piling up.

Watch Out for Digestive Upsets

Another reason not to feed your guinea pig too much zucchini is the risk of your pet developing a sore stomach or diarrhea. Neither is fun for a guinea pig to go through, and more severe cases may result in dehydration.

Feeding Guidelines: Zucchini for Guinea Pigs

We’ve established that zucchini, or courgette, is a great, healthy vegetable for your guinea pig to eat as part of a balanced diet. Now let’s look at how much your pet can safely eat, and when to feed.

You can offer your pet about 100 grams of zucchini per day

Slice or Grate Before Serving

Zucchini is low on fat and sugar, so your guinea pig can safely have larger quantities. You can offer your pet about 100 grams of zucchini per day. Before serving, you should wash the zucchini and remove any seeds.

Some cavies like the skins, but not all. If yours doesn’t like the skin, you can simply peel it off. To make it easy for your pet to eat, you can slice the zucchini up or grate it.

Mix Up With Other Vegetables

It is safe for your guinea pig to eat some zucchini even on a daily basis, but it should never be the only vegetable served. It’s a good idea to mix it up with other veggies to avoid digestive upsets and provide a more balanced meal.

Read Next: Why Do Guinea Pigs Eat Their Own Poop? Vet Explains The Reasons

Nutrition Facts

As we’ve already seen, zucchini is not a single-nutrient vegetable. Perhaps its biggest value to your guinea pig is in its rich vitamin C content, but that is by far not the only essential nutrient this vegetable houses.

Vitamin B6, phosphorus, and every other essential mineral except sodium are present in this vegetable.

Zucchini is over 90% water, which is good for your pet’s hydration, especially on those hot summer days.

But it’s more than just the hydration. High water content usually comes with low calories, and zucchini is no exception. It contains zero sugar, and the fat levels are so low they are negligible.

For obesity-prone guinea pigs, zucchini is a great way to get a lot of nutrients in and the hunger pangs satiated, without risking your pet eating too many calories or too much sugar. The low calcium content also lets you feed it without worrying about your pig developing bladder stones.

Bottom line: Can Guinea Pigs Have Zucchini?

Zucchini is a great, healthy addition to any guinea pig’s diet. Low on fat, sugar, and calcium, it is an excellent source of all-important vitamin C, as well as vitamin B6, phosphorus, and a host of other nutrients.

Because of the low sugar and calcium content, you can afford to give your guinea pig more of this veggie than some others, and it can be fed daily. But too much is still not a great idea and can lead to some digestive problems in your pet.

The best way to feed zucchini is as part of a mixture of different vegetables. Just be sure not to add too much of any vegetable that is high in calcium.

Read Next: Can You Give Guinea Pigs Rabbit Food?

Vet’s Comment

Zucchini is very safe for your guinea pig to eat and is a great source of many of the nutrients and vitamins that guinea pigs need. It can be fed daily to your pet in small amounts as it is also very low in fat and sugar.

Many guinea pigs can be picky about their food, and if they aren’t exposed to the taste of a particular fruit or vegetable when they’re young, they may not be willing to try it when they get older.

It’s a great idea to expose your guinea pig to a variety of safe, healthy fruits and vegetables when they are young to prevent picky eating as they get older.

Dr. Leonie McKinlay, DVM

NOTE: Advice provided within this article by is not a substitute for veterinary advice. Please discuss your pet’s specific dietary needs (based on his breed, weight, age, and health status) with a veterinarian.

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