Believe it or not but most of my mouse colony came from PetSmart's fancy mice. They have been doing pretty good... For awhile I was getting feeders from a smaller local pet store that sold white feeder mice and I kept a few back as breeders. It's those white mice that cranked out a whopping 19 babies in one litter! Here's a few photos, the top one is the 19 new babies, the next photos is the parents, and the bottom photo is a fancy mouse from PetSmart, she is fully mature and only had 9 babies. Now I'm in the process of raising up all white babies and replacing all my fancy mice with these super breeders!!!
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