I only have two, and they are in a sweater box-sized container right now. It's really too small for two hides, altho there is a warm and a humid hide (which is see-through, so they aren't brave enough for that one yet). The warm hide is plenty big enough for both, without them being too close--while they are so small anyway.

I don't want any nipped tails.
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di in IN
1.6.1 leopards ( 1 egg in the oven)
0.1 bearded dragons
4.2 fuzzy ferrets