If they are housed in glass tanks, I prefer a combination of under - tank heat pads and overhead lighting. (petbusiness.com)
Because mice are so much smaller than rats and can escape through wire bars that aren't close enough, glass tanks with climbing toys can work well for them. (petbusiness.com)
I'm wondering what the real difference is between something like one of these «specialist» glass tanks for hamsters and something that's basically a normal fish tank? (thehamsterplace.com)