[yorkietalkjilly]

Boy, unless there is intensive and daily training to prevent this, together with a whole program of daily, regular and continuing obedience training and life-enrichment, I don't know of a for-sure, stand-alone way to forever train a dog to not jump a fence. But if a very dog-savvy and dedicated dog trainer worked on with the dog daily several times a day with someone on the other sides of the fence to reinforce the commands/prevent and help with all kinds of desensitization training, one MIGHT eventually train the genetic predisposition to get out an explore and go after prey out of the dog for short spells of time outside IF one did all those other things described and had a very calm, submissive dog who was eager to please and work for treats, praise, pride. But for a dog that stays outside and just using a single course of training for trying to prevent jumping a fence, I don't think that alone would ever be reliable. It might work for a day or a week but after that, I think the dog would revert to previous jumping without the whole program of intensive training, desensitization and only being outside alone for short periods of time. Best thing is just build a tall fence or extend the existing one.

Many fence-jumping dogs will flat ignore the shock or vibration of an electric collar or fence and just go on and jump so those are usually inhumane and ineffective, as are many aversive treatments for jumping.