Tank and Max are brothers with the same parents but a year apart. I have owned each since they were 10 weeks old. Tank can be bossy to Max but believe me they LOVE each other and they never fight. They are both neutered. Tank is very loving and always cleans Max's ears and eyes and is very persistant about it. They (and Jessie my girl) bond to each other, but they are really bonded to my husband and I and really only want to be where we are. We are all together in the house, no one is ever crated or needs to be, all eat and drink out of the same bowls, and know where they can be in the house and where they cant be unless invited. Works for all of us and they respect our opinion and just go with it.