My parents got a lab from a widow. Her husband kept him in a kennel and beat him. He was all fucked up. I didnt think hed ever be okay. He was scared of being pet or anything. Eventually he came around and was an awesome loving dog. Just took him a while to undstand that somebody might give him a hug instead of an asswhooping. I think a lot of his learning was by watching their german shorthair, who i thought of when you described the zoom. My parents basically did a month or so road trip house shopping, the gsp in the car the whole time. I wasnt there, but they said when they finally picked out their house, on 20 acres of mostly open field type land, heidi cut loose and went redlining all over the property until she collapsed, they were legitimately scared she was going to die right there from over exertion. Man, that dog was an athlete though. But she seemed to know when they found their place, and she freaked out at all the room to run.