http://sorisomail.com/email/74298/como-se-danca-o-merengue.html
This dog obviously was born with excellent hips, no hip dysplasia, good knees and ankles, and trained since she was a little pup on this routine. Also, she just is a plain better dancer than most people.
Many hearing dog school train their hearing dogs to jump on their owners, which isn't a great idea for heavy dogs or fragile handlers. Instead, a head touch is good (which is what I use with my dog), and also the ability to jump up, without jumping ON-- this helps improve visibility through doors, windows, etc without damage.
In short, I trained my dog to stand on his rear legs like a poodle, and to hop on his hind legs. Not for long, and nothing like this video by a long shot.
One day, he put his head in my lap to alert me he wanted to go outside. I swivelled and got up. Then he stood up right nose-to nose, eye-to-eye with me, disconcerting me with how close he was and the risk he'd be falling forward and jumping ON me (which I firmly forbade.), He held steady, then swiped my cheek with his nose-- a nose "kiss." He's never surprised me since like that; it was in his "teen phase" where he was playfully testing me all the time.