There's a Brit dog trainer, Graeme Hall, who's been on the telly lately when I've flipped through the channels. The show itself is fairly shit because it's narrated by an insufferable woman whose idea of the job is to offer predictable commentary with lame jokes and because it's edited by morons who seem to keep only the cuts that advance the story the least, but Mr Hall does seem to know what he's talking about.
I've tested some of his ideas while walking the dog. They do work, but the caveat is always that you need to understand what the idiot editor cut from the show.