I got my adult guinea pig a large and it really is a lot of room for her to lay in and move around in. When she moves in the large, the igloo doesn't move at all because there is so much space. Depending on your cage, you could probably buy a medium for an adult guinea pig and it would still have room. Attached below is my adult guinea pig in a large igloo (my cage is 2ftx3ft):
answered 4 months, 2 weeks ago
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Depends on size of guinea, but I bought a large and that will acoomodate my guinea for all her growth.
answered 1 year, 2 months ago
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