We have 12 - all under a year old.......5 little girls (one of whom was a rescue) and 7 little guys.......and 12 different personalities.......they all get along well, altho we do keep Lucky (our rescue girl) in a cage with the 2 babies........she's come a long way with socializing, even to the point of play time with the big kids, but she's not ready to be full time with them just yet...........and she LOVES her hidey hammie....... [Posted in FML issue 4378]