Here's why:
* Different Needs: Guinea pigs and hamsters have very different social, dietary, and environmental needs.
* Territorial: Both species can be territorial, especially hamsters.
* Size Difference: Guinea pigs are much larger than hamsters, which can lead to the hamster feeling threatened and the guinea pig potentially injuring the hamster.
* Night vs Day: Guinea pigs are diurnal (active during the day) while hamsters are nocturnal (active at night). This makes it difficult for them to bond or even interact peacefully.
It's strongly recommended to never house guinea pigs and hamsters together.
Instead, consider:
* Separate enclosures: Provide each animal with a spacious, appropriate enclosure.
* Supervised interaction: If you want to let them interact, do so in a very controlled environment under your supervision. Be prepared to separate them immediately if they show signs of aggression.
Remember, the safety and well-being of your pets should always be your priority.