Bests & Worsts Reviews from Amazon

I have only one guinea pig and she is only 2 months old, so not very big yet. She has been totally psyched about this play pen since I put her in it. She has been running and 'chirping' endlessly. I can't say if she'll be able to climb out of it when she gets bigger, but I think if she associates it with space and a treat, she'll probably be happy to stay in it. As to the size, I guess it's a personal decision how much space you think your pigs need. I find this size ideal and could easily imagine it to be enough space for 2 grown pigs. If you have lots of space, you can get 2 and join them, but in my opinion this is more than adequate for one or even two grown pigs.