Both of them are still young but 1 is bigger than the other. I'm not 100% but I think they are both female. I have the bigger 1 in a 20 gallon long tank & the other in a 10 gallon. I am about to purchase a hatchling mosaic king snake & was thinking of putting that one in the 10 gallon on a stand that my milk snake tank is on (the stand holds 2 ten gallon tanks). I see the ball pythons of different sizes in peoples houses, pet stores, etc housed together and was wondering do you guys think that it would be ok or if they would fight or something? My son's (the bigger 1) is not really as nice or tolerates handling as well as the smaller one does but neither one of them has ever bit me and they have swim in the bath tub together before. I was thinking if i put mine's hide spot & stuff in there would they be ok?