Due to incorrect gender related information given to us, my mouse had babies [although I do not begrudge the pet-store lady because the mouse was young and I enjoyed having the babies]. The father was a white mouse with black spots, and the mother was a white mouse as well, just with brown spots. She had thirteen babies if I remember correctly. All except one were brown spotted. Unfortunately the only black spotted one died . Let's just say I had a lot of mice.

And then one of my fish had babies. It was awesome.