Why is it that people who have dangerous dogs, then decide its the other person's fault when their dog gets out of their own garden (over the fence that the dog owner put up to stop their dangerous dogs from getting out) ?

Watching a Judge Judy and the dog owner admitted his dogs kept escaping but he did nothing about it, then when his dogs got into someone else's garden and attacked their dogs, he decided it was the fault of the owner of the other dog, when that dog was in its own garden, making no attempt to escape from its own garden?

Judge Judy, quite rightly, put the responsibility on the owner of the dangerous dogs who escaped from their fenced yard.