Or is it just that I know of a lot who do. I have a mix who is mostly lab, and she runs when she gets a chance. My mailman has 3 or 4, and he says the only one of his who doesn't is the 6 year old, but she used to. If you couldn't tell mine was out again today. She goes for about two hours when she does. She has to try every escape method once. Today it was out the door of a tennis court where my mom took her to run around (she thought the door was shut, and it wasn't) A few days after we got her, it was out the window. She slipped her collar one day. She managed to detach her leashes before. She now has a greyhound collar and a leash made for big heavy dogs (she's about 60 pounds). My dog has been through a lot of homes, so that probably has a part in it. However, I believe the mailman's had his dogs since they were little. The other two or three in the neighborhood who don't walk much don't go out running. They're also fat. Ours get a lot of activity, so I guess they're in shape enough to run around for a few hours.


