Do Hamsters and Guinea Pigs Get Along?

A hamster and guinea pig standing on some debris.

Hamsters and guinea pigs are two popular pets, and many pet owners wonder if they can live together in peace. While both are small, cute, and furry, they have different personalities, diets, and living requirements. In this article, we’ll explore the relationship between hamsters and guinea pigs and determine if they can live together harmoniously.

Differences in Size and Temperament

Hamsters are typically smaller in size compared to guinea pigs, and they have a more solitary personality. Hamsters are nocturnal animals, meaning they are most active at night, while guinea pigs are diurnal animals and are active during the day. Additionally, hamsters are more aggressive than guinea pigs and may become territorial when housed with other animals.

Similarities in Living Requirements

Both hamsters and guinea pigs need a cage or habitat that is big enough to allow them to move around freely, with plenty of space for sleeping and playing. They both need bedding to keep them warm and comfortable, as well as toys to keep them entertained. Both animals also need a balanced diet of pellets, vegetables, and occasional fruits.

Socialization and Interaction

Hamsters are solitary animals and are not naturally social, so they do not interact well with other animals. Guinea pigs, on the other hand, are social animals and thrive when housed with other guinea pigs. They may tolerate other animals, but it is best to keep them with their own kind for the best socialization and interaction.

Potential Health Concerns

When housing two different species of animals together, there is always the potential for health concerns. Guinea pigs are prone to respiratory infections, and housing them with hamsters may increase their risk of contracting an illness. Additionally, hamsters may be carriers of diseases that can be harmful to guinea pigs, such as the common cold.

Compatibility and Coexistence

It is possible for hamsters and guinea pigs to live together, but it is not recommended. The different living requirements and temperaments of the two species make it challenging to provide the appropriate environment for both. Guinea pigs need social interaction and plenty of space to move around, while hamsters are solitary and prefer a smaller, quieter environment.

Scientific Studies on Hamster-Guinea Pig Interactions

There have been several scientific studies conducted on the interaction between hamsters and guinea pigs. One study found that while hamsters and guinea pigs may tolerate each other, they do not engage in social interaction and may even display aggressive behavior towards each other. Another study found that the stress levels of guinea pigs increased when housed with hamsters, leading to health problems. These studies suggest that hamsters and guinea pigs should not be housed together.

Best Housing Options

It is best to house hamsters and guinea pigs separately in order to provide them with the best living environment. Hamsters should be kept in a cage that is small enough to allow them to feel secure, while guinea pigs should be housed in a larger cage or habitat that provides them with plenty of space to move around and socialize.


In conclusion, while hamsters and guinea pigs may be cute and furry, it is not recommended to house them together. The different living requirements and temperaments of the two species make it challenging to provide the appropriate environment for both. It is best to keep them separate to ensure their health and well-being. With the right housing and care, both hamsters and guinea pigs can be wonderful pets!

Final Thoughts

Remember, every animal is unique and has its own personality and behavior. While this article provides general information and scientific studies on the compatibility of hamsters and guinea pigs, it is important to observe your individual pets to see if they are getting along. If you notice any signs of stress or aggressive behavior, it is best to separate them for the well-being of both animals. Always prioritize the health and happiness of your pets, and provide them with the best living environment possible.