
Guinea pigs are natural herbivores, so their diet should consist of fresh fruits, vegetables, and hay. They require a careful and considered diet to ensure they remain happy and healthy. Vitamin C is a crucial component of a guinea pig's diet as they cannot produce it themselves. They also need plenty of roughage to chew on to wear down their constantly growing teeth and prevent dental problems. Providing sufficient fibre in their diet is important for their gastrointestinal system and general health.
| Characteristics | Values |
|---|---|
| Vitamin C | Essential, as guinea pigs cannot manufacture their own vitamin C. Can be supplemented with a vitamin C tablet or liquid vitamin C directly by mouth every day. |
| Food | Hay, grass, vegetables, fruits, herbs, and pellets. |
| Water | Fresh, clean drinking water should be available at all times. |
| Dietary changes | Any changes should be introduced gradually to allow the guinea pig's digestive system to adjust. |
| Dental health | Hay helps to wear down their continuously growing teeth. |
| Treats | Treats should be given in moderation, and the guinea pig's food intake should be adjusted accordingly. |
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What You'll Learn
- Vitamin C is essential and can be supplemented with fresh fruit and vegetables
- Hay should be available 24/7 to provide nutrition and wear down teeth
- Fresh water must always be available to prevent guinea pigs from becoming ill
- Introduce new foods gradually to avoid tummy upsets and refusal to eat
- A balanced diet of hay, vegetables and pellets will keep guinea pigs healthy

Vitamin C is essential and can be supplemented with fresh fruit and vegetables
Guinea pigs are natural herbivores, so their diet should consist of fruits, vegetables, and hay. Vitamin C is particularly important for guinea pigs as they, like humans, cannot produce it themselves. A lack of vitamin C can lead to scurvy, a disease characterised by swollen joints, poor mobility, and skin infections. Guinea pigs need 10 to 20 mg of vitamin C per day, which can be obtained through fresh fruits and vegetables such as dark leafy lettuce, kale, sweet peppers, and herbs.
Vitamin C is also available in guinea pig pellets, but it is a relatively unstable compound that breaks down quickly. Therefore, it is important to follow the manufacturing guidelines and replace the pellets within 90 days to ensure the vitamin C is still potent. In addition, vitamin C breaks down with exposure to air, so it is recommended to provide fresh portions of pellets daily.
Guinea pigs develop food preferences early in life and may be hesitant to try new foods. Any changes to their diet should be introduced gradually to prevent tummy upsets and to allow their digestive system to adjust. Fresh vegetables and herbs are excellent sources of vitamin C, but they should be given in small amounts a few times a week due to their high sugar and calcium content.
Some fruits and vegetables should be avoided altogether as they can be poisonous or cause an upset stomach. These include lawn trimmings, which can cause digestive issues, and cruciferous vegetables like cabbage and broccoli, which should be fed in moderation as they can cause bloating. It is important to thoroughly wash any fresh produce before giving it to your guinea pig and to remove any uneaten food before it spoils.
In summary, vitamin C is essential for guinea pigs and can be supplemented through fresh fruits and vegetables. However, it is important to introduce new foods gradually and to be mindful of which produce is safe for guinea pigs to consume.
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Hay should be available 24/7 to provide nutrition and wear down teeth
Hay is an essential part of a guinea pig's diet and should be available at all times. Hay provides guinea pigs with the fibre they need to support their gastrointestinal system and general health. Fibre also keeps their guts moving, and a lack of it can lead to a life-threatening condition called 'gut stasis', where the digestive system slows down or stops working.
Guinea pigs' teeth are constantly growing, so they need to be worn down by chewing on fibrous foods. The abrasiveness of hay stalks helps to file down their teeth, and without hay, their teeth can overgrow, leading to serious health complications. Hay also provides essential nutrition, with high levels of vitamin C.
Guinea pigs need a constant supply of hay and grass to provide them with enough fibre. Fresh grass can be eaten straight from the lawn, or you can pick it for them if they don't have access to the outdoors. However, it is important to ensure that the grass has not been sprayed with any herbicides or pesticides and is not contaminated with exhaust fumes or soiled by other animals.
To store hay, it should be kept in a hayrack or basket to prevent it from sitting on the enclosure floor and getting contaminated by guinea pigs' waste, becoming damp, dirty, and mouldy. Hay should be stored in a cool, dry place to prevent the growth of mould or mildew.
Guinea pigs require a careful and considered diet to ensure they remain happy and healthy. Hay should be available 24/7 to provide nutrition and wear down their teeth.
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Fresh water must always be available to prevent guinea pigs from becoming ill
Fresh, clean water must always be available to guinea pigs to prevent them from becoming seriously ill. It is recommended to check their water supply twice daily and ensure that it doesn't freeze in winter. Multiple water dispensers should be available, and enclosures should be fitted with a water bottle and a small water bowl.
Guinea pigs are susceptible to health issues if they do not have access to fresh water. They can develop life-threatening conditions such as 'gut stasis', where their digestive system slows down or stops working due to a lack of fibre in their diet. Additionally, guinea pigs need to stay hydrated to support their continuously growing teeth and gastrointestinal health.
Guinea pigs should be provided with a constant supply of fresh water alongside their diet of hay, grass, vegetables, and pellets. Their diet should be carefully considered to ensure they receive the necessary vitamins and minerals. Any changes to their diet should be made gradually to prevent tummy upsets and ensure they continue to eat.
Guinea pigs require vitamin C in their diet, which can be provided by fresh vegetables and supplemented with vitamin C tablets or liquid vitamin C directly by mouth. However, vitamin C should not be administered in their drinking water as it breaks down rapidly and loses potency.
In summary, fresh water is essential to the health and well-being of guinea pigs, and it plays a crucial role in maintaining their digestive and dental health. By providing unlimited access to fresh water and a balanced diet, guinea pigs can stay happy and healthy.
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Introduce new foods gradually to avoid tummy upsets and refusal to eat
Guinea pigs are natural herbivores and require a careful and considered diet to ensure they remain happy and healthy. They develop food preferences early in life and do not easily adapt to changes in food types, appearances, or presentation. Therefore, it is important to introduce new foods gradually to allow their digestive system to adjust and avoid tummy upsets and refusal to eat.
Guinea pigs need a constant supply of hay and grass to provide them with enough fibre. Hay provides essential nutrition with high levels of vitamin C and plenty of fibre. The abrasiveness of the hay stalks helps keep their teeth filed down, and without it, their teeth can overgrow, leading to serious health complications. Long-stemmed hay is also crucial for maintaining a healthy digestive system. It is recommended to offer a mix of timothy, orchard, and oat hay, with some alfalfa hay acceptable, but in moderation due to its high calcium content. Hay should be stored in a cool, dry place to prevent mould or mildew and should be available 24 hours a day.
Fresh vegetables and greens are also an important part of a guinea pig's diet, providing essential vitamins and minerals. Guinea pigs can enjoy a wide range of vegetables, but leafy greens are the most important. Some good options include kale, sweet peppers, romaine lettuce, carrots, celery, cucumber, and spring greens. Herbs such as marjoram, borage, marigold, nasturtium, rosemary, parsley, coriander, basil, and dill are also packed with nutrition. However, it is important to introduce new vegetables gradually, as some can cause an upset stomach or be a choking hazard.
Guinea pig pellets should also be included in their diet, specifically formulated for guinea pigs and containing vitamin C. While vitamin C is available from fresh produce, guinea pigs may not consume enough each day to meet their needs. Pellets should be given in small amounts, and it is important to monitor their intake to prevent overfeeding. The quantity of food a guinea pig needs depends on their age, lifestyle, and general health, so it is important to adjust feeding quantities accordingly.
When introducing new foods, it is recommended to start by mixing a small amount of the new food with their current food. Gradually increase the amount over a period of about two weeks, monitoring for any signs of tummy upset. This slow transition will help ensure your guinea pig's digestive system can adjust to the new food without any negative effects.
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A balanced diet of hay, vegetables and pellets will keep guinea pigs healthy
A guinea pig's diet should be carefully considered to ensure the animal remains healthy and happy. A balanced diet of hay, vegetables, and pellets will keep guinea pigs healthy.
Hay is an essential part of a guinea pig's diet. It provides the animal with fibre and helps to wear down their teeth, preventing serious health complications. Guinea pigs' teeth grow continuously, so they need to chew on fibrous foods to keep them ground down. Hay also keeps their guts moving, as a lack of fibre can lead to a life-threatening condition called 'gut stasis', where the digestive system slows or stops working. Guinea pigs should have unlimited access to fresh, good-quality hay. Timothy hay is a great option, and guinea pigs can also eat fresh grass.
Guinea pigs also need to eat vegetables. They are natural herbivores and would graze in the wild, so they need to eat plenty of roughage. Leafy greens are the most important, and guinea pigs can eat a wide range of vegetables, including kale, sweet peppers, romaine lettuce, carrots, celery, cucumber, and spring greens. Vegetables provide guinea pigs with vitamin C, which is vital for the normal development and maintenance of skin, joints, and gums. Guinea pigs cannot manufacture their own vitamin C, so it is recommended that they are given a vitamin C supplement. Guinea pigs should receive one cup of vegetables per day.
Pellets are also an important part of a guinea pig's diet. They should be specifically formulated for guinea pigs and contain vitamin C. Guinea pigs should be given one tablespoon of pellets per day.
It is important to introduce new foods to guinea pigs gradually, as they develop food preferences early in life and do not easily adapt to changes in their diet.
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Frequently asked questions
A guinea pig's diet should include unlimited fresh hay, a variety of vegetables, and specially formulated, high-quality pellet food. Guinea pigs are natural herbivores and require a lot of fibre in their diet.
The quantity of food a guinea pig needs depends on their age, lifestyle, and general health. On average, a guinea pig should receive a daily serving of one cup of vegetables and approximately two tablespoons of pellets.
Guinea pigs can eat a wide range of vegetables, including leafy greens, kale, sweet peppers, romaine lettuce, carrots, celery, cucumber, and spring greens. Be cautious with cruciferous vegetables like cabbage and broccoli, as they can cause bloating.
Guinea pigs cannot produce their own vitamin C, so it is important to supplement their diet with it. Guinea pigs may need a larger portion of pellets if they are growing, pregnant, nursing, or underweight. Any new foods should be introduced gradually to their diet to prevent tummy upsets.











































