We had a fence jumper some years back and yes, the back yard looked like a prison camp! We had to buy these brackets of sort (I don't know the name) that went on the chain link fence and went inward (prison Camps they go outward) and that did help about 90% of the time. One time she crawled up the fence and got her two upper fangs caught and the teeth went sideways into her check! That was a bad experince. Sorry I got off track. I have heard that many people have had luck with what lbaker said about the harness that prevents them from jumpimng up and they can still walk/run etc. cost was about $14 and should be in any pet shop or on the internet.