Originally Posted by Yorda
The other thingâ€¦most of my cats can easily pop open accordion style doors so I donâ€™t know how well they hold up to cats in general.
I can agree with that! When my brother moved back in, we installed accordian doors in the family room downstairs (it turned into his room), and I can't tell you how often he got annoyed because Buffy would poke the door open and wander in. If she saw the door closed, she'd open it. Sometimes she'd pry it open with her paw, other times she'd simply leap against it, making a much more dramatic entrance, lol
Unless you can get a more permanent door, I wouldn't recommend letting the two species roam together. If there's one thing about cats, they're hunters, pure and simple. They can appear to love a hamster, but one day their prey drive might kick in and they'll break the hamster's neck. It's just nature, it's what they were meant to do. As for containing the guinea pigs, I don't know, I've never had small rodents before, but it seems to me that if they're used to roaming, it might not be fair to contain them. So I wouldn't get a cat unless you get a sturdier door.