There was a JRT on the next block, Mike that was great with kids, and small dogs, but a real piece of work as far as staying in the yard. He dug tunnels and jumped over the fence, and even climbed up a tree to get up on the roof of the house to get out. He wanted, and they finally just let him do it, to go to the owner's mother's house at 730 EVERY day, no matter how cold, wet, or snowy it was, for breakfast, and return at 830, he went about a mile or so each way. I used to see him running home a couple times a week. He did this routine for over 10 years, finally dying suddenly at 13, an old age for a JRT, from what I've read. He wasn't a big fan of bigger (than he was) dogs either, but my old Pit mix and he got along pretty well. The Rott accross the street was terrified of him. He was hell to walk on a leash too, his slow speed was a pretty fast walk. I used to laugh when I saw the oldest daughter being dragged down the street by Mike.