Our two GSDs, Jax (17 mo.) and Kane (8 mo.) are the best of friends. I have owned many dogs and never have I seen two dogs get along well as these two do. At night, when the household starts quieting down for the night, they like to lay together with their front legs intertwined and take turns licking each others mouths. Neither has ever tried to assert dominance over the other. Jax is clearly my DH's dog and Kane is mine. Where DH is, there's Jax and where I am, there is Kane. Lately Kane has developed a habit that I am pretty sure is just a phase he's going through, but I'm not sure. He doesn't like Jax showing me affection. When he sees Jax trying to interact with me, he'll run up and push Jax away with his body (easy to do since Kane now outweighs Jax by about ten pounds). Is it a phase? Kane is a teenager now and showing more of his adult personality. When he pushes Jax away, I feel bad for Jax but I'm not sure if we should ignore Kane's behavior or correct it. Lately I've been telling him "Nien" (no!) and continue to love on Jax. Kane responds by laying down next to me, but you can tell he doesn't like it.