Hi, I am new to this site and to owning a boxer. My baby girl will be 11 wks tomorrow. I have a question and a concern. I have introducd my puppy to my sisters 6 month old boxer. To me they did not seem to hit it off?! My puppy let the other one sniff her but the big one would not let mine sniff her. The big one(roxy) got upset and pawed her head, so in return mine growled and barked at her like crazy. They both would bark at one another and then ignore each other for a while, but when they did meet up again they seem to bark, growl, and nip at each others face. I dont know if this is play or aggression. I have heard two same sex boxers usually dont do well together. Sorry to go on and on. Just need some advice??!! Oh, and by the way they were both on leashes when they were introduced.