I posted this on Friday, but it disappeared without any explanation or response, so I'm posting it again as I have no idea what happened. I may be getting a 3 mo. old male dobie pup as an addition to my current 2.5 y.o. boxer male. In the past my boxer has been quite dominant, but this has decreased as he is getting older, so I assume he was just going through his teenage years. I have read that dobies can be quite dominant themselves and am not sure if this combo would be the best. Also, I live in an apartment building in Queens, NY if that weighs on anyone's advice or input.