Is Rocco Nuetered or is he still intact? With two males in the house, Normally you WILL have a altercation or two for one to develop as the Alpha of the dog pack. You as the master will still be the dominent one but Rocco maybe resenting due to he feels he is the alph of the animals and does see you pay more attention to the pup. He will come around when he's ready. They are just like kids. They pout too. lol