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Can Guinea Pigs Eat Hamster Food? Vet Approved Facts & FAQ

Ed Malaker

By Ed Malaker

Guinea pig in a meadow

Vet approved

Dr. Lorna Whittemore Photo

Reviewed & Fact-Checked By

Dr. Lorna Whittemore

MRCVS (Veterinarian)

The information is current and up-to-date in accordance with the latest veterinarian research.

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Guinea pigs and hamsters are both small and popular pets. Since they look similar, many people wonder if they eat the same foods. Unfortunately, these animals have different diets and shouldn’t eat the same food. Keep reading as we discuss the eating habits of guinea pigs and hamsters and answer several questions that will help you understand your pet better so they can live a longer and healthier life.

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Guinea Pig Diet

Guinea pigs are herbivores and need a diet high in fiber and vitamin C and low in fat. They require a constant supply of hay, such as timothy hay or meadow hay, to promote proper digestion and keep their teeth healthy. Fresh vegetables like kale, spinach, romaine lettuce, bell peppers, and carrots will provide essential vitamins and minerals. Additionally, guinea pig pellets should be high in fiber and contain vitamin C, as these critters cannot synthesize it themselves.

guinea pig eating pellets
Image Credit: Fangfy, Shutterstock

Hamster Diet

Hamsters are omnivores and thus, can have a more varied diet. They need a combination of seeds, grains, fruits, vegetables, and animal protein (insects) to meet their nutritional needs. Commercial hamster food usually consists of seeds, grains, and pellets. It is important to note that some hamster foods contain additives, artificial colors, or high-fat levels, which may not be suitable for guinea pigs.

Can Guinea Pigs Eat Hamster Food?

Hamster food is designed specifically for hamsters and does not provide the complete and balanced nutrition that guinea pigs require. Guinea pigs have specific dietary needs, such as a high requirement for vitamin C and low fat content. Hamster foods often contain seeds, nuts, or other ingredients that can lead to digestive issues and obesity in guinea pigs. Therefore, feeding hamster food to guinea pigs is not recommended as in the short term they may develop diarrhea and in the longer term vitamin C deficiency.

a cute guinea pig in the enclosure
Image Credit: Dev_Maryna, Shutterstock

Alternative Food Options for Guinea Pigs

To provide a nutritionally balanced diet for guinea pigs, stick to foods specifically formulated for them. Good-quality guinea pig pellets should be the primary component of their diet. Look for ones that are high in fiber, contain added vitamin C, and have a low-fat content. In addition to pellets, guinea pigs will need a constant supply of fresh hay and various fresh vegetables. Hay helps maintain healthy digestion, while vegetables offer essential vitamins and minerals. A well-rounded diet for a guinea pig may include leafy greens like parsley and cilantro, bell peppers, carrots, and occasional treats, such as small pieces of fruit.

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Frequently Asked Questions

Can Guinea Pigs Eat Hamster Food as an Occasional Treat?

Unfortunately, most experts recommend against feeding hamster food to guinea pigs, even as a treat. Guinea pigs have specific dietary requirements, and hamster food may lack the necessary nutrients and contain higher fat content and potentially harmful ingredients for guinea pigs.

Why Do Guinea Pigs Need Vitamin C?

Guinea pigs cannot produce vitamin C and require a dietary source to prevent deficiency-related health issues. Lack of vitamin C can lead to scurvy, a condition characterized by weakness, poor growth, joint pain, and other health problems.

Guinea pig eating an orange
Image Credit: Lost_in_the_Midwest, Shutterstock

Are There Any Specific Vegetables That Guinea Pigs Should Avoid?

While guinea pigs can enjoy a variety of vegetables, they should avoid ones high in oxalic acid, such as rhubarb and spinach. Iceberg lettuce is also not recommended because it has low nutritional value and can cause digestive issues. Onions, garlic, and other Allium family members are toxic to guinea pigs too.

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While guinea pigs and hamsters can easily confuse inexperienced owners due to their pocket pet status, they have different diets and require different nutrients. The guinea pig is an herbivore that primarily eats hay and vegetables. They also need you to provide them with vitamin C because they cannot make it internally. Hamsters will eat plant and animal proteins, and their diet tends to be high in fat, so even if hamster food doesn’t cause digestive issues in your guinea pig, it will likely lead to rapid weight gain. Therefore, keeping your pet on a diet specific to guinea pigs is best.

Featured Image Credit: maRRitch, Shutterstock

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