Mice are social so should be kept in groups, ideally same sex to avoid unwanted litters. Their bedding and cage requirements are similar to that of a hamster or rats but please be aware that mice can squeeze through small spaces, so make sure the cage bars are not too wide. Contrary to belief, mice do not require cheese or dairy products. It is best to feed them a good-quality, commercial mouse food. Mice like climbing and burrowing through tunnels but they are very quick so do not always make ideal pets for children.