Max, our standard dachshund rescue, is a shy boy and Buddy is not, so they don't have much interaction at this point. We are working with them as Buddy will naturally bully Max. On Christmas, we were with our daughters and their families. It was Buddy's first time to meet the husband of one and fiancé of the other. He immediately warmed up to both men. Both families have doggies, both dominant - Molly, a 6 year old Maltese, and Bullet, an 8-9 yr old black & tan tweenie dachshund adopted in 2010. The first meeting went okay. Buddy does get a little possessive of toys so we are working on that too. We'll be grand dog-sitting all of them in February for 5 days and that should provide a real opportunity for them to get to know each other better.