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What Can Guinea Pigs Eat? – Feed My Guinea 2023

What Can Guinea Pigs Eat

Reviewed by Carol Dunham

Seasoned Pet owner and enthusiast, Content Reviewer at

We’ve all been there, haven’t we? Standing in front of the fridge, wondering what we can whip up for dinner. But when it comes to our furry little friends, the question becomes, “What can guinea pigs eat?” Well, we’ve got you covered! In this article, we’ll dive into the world of guinea pig nutrition, exploring the ins and outs of what makes a balanced and healthy diet, what vegetables can guinea pigs eat, and what foods are safe for our cute, squeaky pals. You can skip the article and ask a guinea pig vet directly.

Importance of a balanced diet

Like us humans, guinea pigs need a varied and balanced diet to thrive. A proper diet not only ensures they get the essential nutrients, but it also keeps them entertained and happy. So, let’s start by examining the different food groups and how they contribute to a healthy guinea pig diet. Remember this article is not about the best diet for your guinea pig but to make you understand what you are feeding your guinea.

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guinea pig feeding

A Variety of Fresh Food – Vegetables and Fruits

Leafy greens

You can’t go wrong with leafy greens, can you? Well, the same goes for guinea pigs! A variety of different greens like romaine lettuce, kale, parsley, and spinach provide essential vitamins and minerals. Make sure to mix things up, as each type of green offers a unique combination of nutrients and a higher nutritional value. Maybe even throw in some vegetables and herbs.

Colorful veggies

Think rainbow! Colorful vegetables such as bell peppers, carrots, and tomatoes not only add variety but also supply antioxidants and other vital nutrients. But remember, moderation is key. Some veggies, like tomatoes, should only be given occasionally due to their high sugar content.

Fruits as a treat

Fruits are like nature’s candy! And guess what? Guinea pigs enjoy them too. However, due to their high sugar content, fruits like apples, pears, and strawberries should be given sparingly, as a special treat. They will love you if you provide a variety of fruits.

Portion sizes and frequency

We can’t stress enough the importance of portion control. Due to being high in sugar overfeeding fruit can lead to obesity and other health issues. Generally, one cup of fresh veggies can be fed to guinea pigs daily, it’s best to think of this is a good guideline, while a small piece of fruit can be given once or twice a week. Guinea pigs should be given vegetables every day.

foods for guinea pigs

Other Foods To Feed Your Guinea Pigs

This table showcases a variety of vegetables and fruits that guinea pigs can safely enjoy. It is crucial to remember that these foods should be provided alongside a primary diet of hay and pellets. While vegetables can be offered daily, fruits should be given sparingly due to their higher sugar content




Bell peppers Apples
Carrots Strawberries
Tomatoes Pears
Kale Blueberries
Spinach Kiwi
Romaine lettuce Papaya
Celery Peach
Parsley Mango
Cilantro Raspberries
Green beans Blackberries
Zucchini Watermelon


Please note that this table is not exhaustive and that it’s essential to research each food item before offering it to your guinea pig to ensure it’s safe and beneficial for them. Also, remember to provide fruits sparingly, as fruit is high in sugar compared to vegetables. It is still safe to feed fruit but guinea pigs tend to like veggies more.

Guinea Pig Pellets

High-quality Guinea Pig Pellets

Ingredients to look for

While fresh veggies and fruits are essential, pellets provide additional nutrients to round out a guinea pig’s diet. Look for high-quality pellets with a good balance of protein, fiber, and vitamin C. Avoid those with added sugars or artificial ingredients. Only get pellets that are marketed for guinea pigs, other kinds will cause issues.

How much and how often

Pellets should make up a relatively small part of a guinea pig’s diet. A general guideline is to provide around 1/8 cup of pellets per day for an adult guinea pig. Be sure to check the manufacturer’s recommendations and adjust the amount based on your pet’s age and activity level.

guinea pig hay

An Abundance of Hay

Types of hay

Hay is the backbone of a guinea pig’s diet. It provides essential fiber, aids digestion, and keeps those ever-growing teeth in check. There are several types of hay available, such as Timothy, orchard grass, and meadow hay. Offering a mix of these hays will not only ensure proper nutrition but also keep things interesting for your guinea pig. You should give fresh hay to your guinea pigs to eat.

“What Can Guinea Pigs Eat: Treat Your Cavy to Endless Amounts of Timothy Hay or Other Low-Calcium Options, Complemented by a Pinch of Nutrient-Rich, High-Fiber Timothy-Based Pellets!”

The role of hay in guinea pig’s health

As mentioned earlier, hay plays a crucial role in a guinea pig’s overall health. Besides providing much-needed fibre in their diet, it also helps prevent obesity, supports dental health, and contributes to their mental wellbeing. Always ensure your guinea pig has access to fresh, clean hay throughout the day, hay is safe for guineas pigs to have in their daily diet. Always try to provide high-quality grass hays to keep your guinea pigs happy.

The Importance of Vitamin C

Natural sources

Guinea pigs, just like us humans, cannot make their own vitamin C, making it an essential part of their diet and it can be hard to get the right levels of vitamin c, but its not impossible. A variety of fresh fruits and veggies, such as bell peppers, oranges, and strawberries, are excellent natural sources for plenty of vitamin C, but make sure not to provide fruit on a daily basis as it is often very high in sugar.

We can handle it but a little guinea will have difficulties and will end up fatter than anyone wants. Stick with feeding your guinea pigs fresh fruit 1-2 times per week. The last thing you want is make your guinea pig a diet to burn off that extra fat.


In some cases, you might need to provide additional vitamin C by providing vitamin c supplements to ensure your guinea pig gets enough of this vital nutrient. Consult your vet for advice on the appropriate dosage and the best form of supplement, be it a tablet or liquid.

Feed Guinea Pig – Foods to Avoid

Dangerous foods

There are certain foods that guinea pigs should never eat, as they can cause severe health problems or even be fatal. These include avocado, chocolate, onion, garlic, and rhubarb. Always be cautious and do thorough research before introducing any new food to your guinea pig’s diet.

Foods that are okay in moderation

Some foods, while not necessarily harmful, should be given in moderation. Foods like cucumber, corn, and broccoli are okay in small quantities but can cause digestive issues if fed in excess.

Calcium Dangers

Be mindful of calcium in your guineas diet, too much will likely lead to bladder stones (urolithiasis). Bladder stones are quite common in Guinea pigs’ and they can cause many issues. The Guinea Pig Vet states that because guinea pigs don’t produce Vit C they need to get it from their diet but high levels of vitamin c can lead to calcium oxalate stones being formed.

“Vitamin C is important in the diet of guinea pigs as they cannot produce their own however high levels should be avoided in guinea pigs prone to calcium oxalate stones.

What does this mean for you cavy? Well it means you should monitor what you feed to your guinea pigs and look out for anything high in vitamin c. Your guinea pigs’ diet requires vitamin c but be careful. In the worst case possible, bladder stones can cause death.

guinea pig feeding

Experimenting with New Foods

Introducing new foods slowly

When trying out new foods to offer your guinea pig, it’s essential to introduce them gradually. Start with a small amount and keep an eye on your pet’s reaction. This way, you can monitor any changes in their behavior or digestion, and it also helps prevent potential food sensitivities or allergies.

Monitor your guinea pig’s preferences

Just like us, guinea pigs have personal tastes, and they might love some foods more than others. Pay attention to their preferences and adjust their diet accordingly, find out what your pet guinea pigs love to eat. Keeping them engaged and satisfied with their meals will contribute to their overall happiness and well being.

Guinea Pig Drinking water

Hydration Is Key

Fresh, clean water

Along with a well-balanced diet, pet guinea pigs need constant access to fresh, clean water. A water bottle with a sipper tube is the best option, as it prevents contamination and ensures your pet always has enough water. Don’t buy a cheap bottle however, from experience cheap bottles leak and will mean you need to change your guineas bedding more often than needed. We recommend the Vanin Top Fill Bottle, no drip, easy to clean and holds a lot of water.  

Monitoring water intake

Keep an eye on your guinea pig’s water intake, as changes can indicate potential health issues. Be mindful of the temperature, too – during hot summer days, make sure to provide cooler water to help them stay comfortable and hydrated.

Encouraging Foraging and Play

Foraging toys

In the wild, guinea pigs spend a considerable amount of time foraging for food. You can encourage this natural behavior by providing foraging toys and hiding treats around their living space. This keeps them active, mentally stimulated, and engaged.

Playtime and socialization

Guinea pigs are social creatures, and spending time with them is vital for their happiness. Schedule regular playtime and interaction to bond with your pet and keep them entertained. Don’t forget that guinea pigs are known for their curious nature – exploring their environment and discovering new things is part of their charm!

Guinea Pig Grass

Indulge Your Guinea Pig with a Grazing Paradise

Offering a chance to graze on grass is vital and an easy way to keep your guinea pigs happy and healthy. If they lack a secure area to freely roam and graze (like a safe enclosure), providing freshly-cut grass is a great alternative. However, steer clear of lawn clippings, as they may cause digestive issues.

When gathering grass for your guinea pig, safety is paramount. Double-check that the grass that you’re feeding your guinea hasn’t been exposed to herbicides or pesticides, avoid roadside grass due to potential contamination from exhaust fumes, and steer clear of areas soiled by other animals (such as livestock or dogs).

Ask a Guinea Pig vet

Regular Vet Checkups

The importance of veterinary care

Regular veterinary checkups are crucial to maintaining your guinea pig’s health. Your vet will monitor their weight, teeth, and overall condition to ensure they’re receiving the proper nutrition and care.

Preventive care and early detection

Routine checkups allow for preventive care and early detection of potential health problems. If you notice any changes in your guinea pig’s eating habits, behavior, or appearance, consult your vet immediately.

In conclusion, providing a balanced diet, proper hydration, engaging playtime, and regular veterinary care will help your guinea pig lead a happy and healthy life. Remember to cherish the unique bond you share with your furry friend and enjoy the delightful moments together. Happy feeding!

Ask A Guinea Pig Vet

Don’t forget, if you are worried about your little cavies health or just curious to find out how you can make their life better, then we are here for you. Talk to a vet online about your little Guinea and find out everything you could ever need. Our team of vets are vetted and highly experienced in all matters Guinea Pig related. Get started today and ask a guinea pig vet online, live vet chat available 24/7


Feeding your guinea pig a balanced and varied diet is the key to a happy, healthy pet. Remember to provide a mix of fresh veggies, fruits, high-quality pellets, and plenty of hay, along with adequate vitamin C intake. Always research new foods and consult with your vet for guidance on proper nutrition. With love, care, and a little bit of culinary creativity, your guinea pig will thrive and bring you endless joy. So, let’s get cooking, shall we?


Frequently Asked Questions

1. How often should I feed my guinea pig?

You should be feeding your guinea pigs daily. Guinea pigs are natural herbivores and should have access to a decent amount of fresh hay, as it is the primary component of their diet. Fresh vegetables for guinea pigs should be provided daily, with a general guideline of one cup per guinea pig. High-quality pellets can be given in a smaller quantity, around 1/8 cup per day, while fruits should be offered sparingly, once or twice a week as a treat.

2. Can guinea pigs eat human food?

Guinea pigs can enjoy some of the same foods we do, such as fruits, vegetables, and leafy greens. However, it's essential to research each food item before offering it to your guinea pig to ensure it's safe and beneficial for them. Avoid processed human foods, as they often contain high levels of salt, sugar, and artificial additives that are harmful to guinea pigs. 

3. Can guinea pigs eat grass from the yard?

Yes, guinea pigs can eat grass from your yard, provided it's pesticide-free and has not been treated with any chemicals. Always ensure the grass is clean and fresh before offering it to your pet. Grazing on grass is a natural behavior for guinea pigs and provides additional fiber to their diet.

4. What are some good treats for guinea pigs?

While fruits such as apples, pears, and strawberries can be offered as occasional treats, you can also consider giving your guinea pig small amounts of herbs like basil, cilantro, or mint. Additionally, some pet stores offer guinea pig-safe treat options, such as dried fruit or veggie bites. Colourful guinea pig treats are something the like best. Just make sure to check the ingredients and opt for treats with no added sugars or artificial additives.

5. How do I know if my guinea pig is getting enough vitamin C?

Signs of vitamin C deficiency in guinea pigs include lethargy, weight loss, and swollen or painful joints. To ensure your guinea pig gets enough vitamin C, offer a variety of vitamin C-rich fruits and vegetables, like bell peppers, oranges, and strawberries. Two vegetables that are high in vitamin c are broccoli and cabbage, you can try them and see if guinea pigs like them or not. Consult your veterinarian if you're unsure about your guinea pig's vitamin C intake or if you suspect a deficiency – they can provide guidance on supplements and proper dosages.


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