Tweetdamn jumps over a 6ft fence! that dogs a beast. I had issues with my dog getting out a lot, then a few months ago he got slammed by a car @ 40mph. Since then he hasnt tried to get out 1x. Obviously that doesnt help ya but I tried a lot of stuff with him he just is hardheaded and had to learn the hard way I guess. You can always keep him on a lead outside tied to a run of some sort.