Dogs have a pretty acute sense of understanding their owner’s vibes. For instance, if you’re mad, it’s mad. If you’re happy, it’s happy. Bill Burr had a pretty funny piece where he detailed how his Pitbull, Cleo, became psychotic only when he was around. If you don’t know who Bill Burr is, check out his stuff on YouTube. You won’t regret it.
Anyway, this copy-dog stuff is common amongst nearly all dog breeds. This guy found it out in the most hilarious way possible. If asked to do anything, the guy would jokingly groan and get up from the couch to do it. Over time, he discovered that his dog would follow his lead and groan before hopping off of the couch.