We took Oliver to pick Brooklyn up...so they met right at the breeders home. Then when you get home try to not pay more attention to the pup....do for your first pup first and the newbie second. Just try to keep things as normal as possible and they will probably become best buddies in no time. Oliver took all of about a day before he decided he kind of liked this "new baby sister stuff"!! Now they are always together!! Good luck!