Our best friends are part of a pit bull rescue group here in Rochester, they always have one or two dogs they are fostering along with their own big boy. Really nice dogs, will knock you down in their excitement to see you, and try to lick your feet off. So cute! And he remembers too, really smart.. we can go for several months without being over to their house and he'll still remember us. I've never experienced any of them being negative about us visiting, like overly territorial. There is a difference in response between their own dog that remembers us and is happy to see us again, and the foster dogs that are just excited to be able to smell a new person. They all come running and barking excitedly when we ring the bell,of course.