Quote Originally Posted by pretends2bnormal View Post
Generally no, their mouths are much bigger and they would have a very hard time (if not impossible, I'm not certain which) getting to the food through the smaller spaces. Definitely don't want smaller than 1/2"×1/2" spaces for rats to have to try and eat through.

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Okay, that makes sense. When I get hoppers I would probably just add a food bowl in the tub to make sure they are eating enough.