Will rats and hamsters get along?

Rats and hamsters should never be housed together. They have different nutritional requirements and environmental needs, and they can be aggressive towards each other. Rats are inquisitive creatures and may see the hamster as a potential prey item, while hamsters are territorial and may feel threatened by the rat. Additionally, rats can carry diseases that can be harmful to hamsters. If you are considering keeping two small pets, it is best to get two of the same species.