I have a female guinea pig, and one of my roommates recently got a male one. They hated each other at first, but now we can't separate them. We put their cages together.
They're acting odd. We used to take them out of their cage and play with them. They used to even come out of the cage and play whenever they could. But now, whenever someone even gets close, they run and hide together. Right now, we never usually see the female outside her house unless to eat.
Even to the point were the male jumped off the couch to get back in the cage. (scared the crap out of me).
What I'm thinking is that the female might be pregnant and the male is trying to protect her? Something like that?
Is there any way to tell for sure?