[Asooka]

People who breed pet mice exist and they probably have a lot more data from much longer time periods on this kind of thing. I also briefly talked with a person who maintains the herpetology exhibits at a museum. They breed rats to feed to the snakes and effectively avoid the overpopulation problem by just culling the population. The rats seem to be doing just fine in that arrangement. It does sound a bit sad, but effectively small rodents have evolved to be eaten.