My boyfriend and I have had our boys for about 9 months now, and we think they need another friend. One of our boys is very adventurous and loves playing with us, the other however is still constantly nervous, I've started immersion therapy with him and its definitely been working, hes been cuddling us lots and getting more comfortable coming out of the cage, but we think if he had another buddy he would be more comfortable. I've noticed if he sees his brother running around us he feels more comfortable to approach us, and I think that if theres another rat for him to be comfortable around it might improve his mood more. As it stands neither of our rats are the "dominant" they play around wrestling back and forth, but neither of them takes control. I think they wouldn't be good with an aggressive rat, so we were thinking of getting a younger boy. We live in Eugene but might be willing to travel, depending on where.