My second dog immediately gained our first dogs' approval. They loved each other from the moment they met. It surprised me, actually. THen, we added Max, and CErb didn't take as well to having another boydog in the house. They took longer to warm up to one another. We kept Max sleeping in a crate in our bedroom for a few months so Cerb could still have his couch to himself at night. Now, they both sleep up there, and most of the time they're touching each other. I woke up this morning, and Cerberus was using Max as a pillow. It was too cute. Just give it time. I think I just had the freak incident of Cerbie falling in love with Brigit. I'm sure I'll never have it that easy again.