Sheldon lives across the fence in our back yard. He is a very muscular pit bull with a deep and beautiful bark. He comes to the border for a visit when Henry and I walk out. Sheldon and Henry scamper along the chain link and wuff at each other - then eventually both come back to me. Sheldon on the far side of the fence. They each get a treat and then sniff my fingers for a bit more. It's my attempt at socialization for the two. Maybe someday they can play in the same yard - Sheldon is in training class. He still lunges when the fence doesn't separate them. He wants to play, but doesn't know how to appropriately. Henry would be gobbled up and Sheldon would not even realize he did it.