That's a Basenji U turn, which is legal in a dog park! Mine is so limber he will put is head down in the couch cushion then let his body drape over folding himself in half. I'm thinking of putting his resume in with Cirque du Soleil.
Hahaha! Great idea - they'd teach the Cirque dancers new tricks! Mine squeezes herself behind us when we're sitting on the couch and then bends her head over the back of herself so she can look at us and "tell" us to give her more room!:p