I really dont know && I am trying right now to introduce a new adopted baby (kitty) to my other five & its been tough.. This new baby wants to fight the others all the time even if they all just look at her.. I keep her in her own room when I am at work & when I am at home I let her run the house.. Pretty much the five others stay in the front rooms of the house & the new one stays in the back rooms of the house.. Maybe hopfully some day they will all start getting along. You may just have to keep your two babies seperated all the time.. Sorry I couldnt help much & best of luck..