Exhibit B: Handsome, energetic and enthusiastic dog's banged-up legs after said dog decides that the stairs simply take too much time... he'd just rather fly... and then do a face-plant into the sidewalk.
Seriously people... he also has a scraped chin and chest and a busted lip. He PLOWED into the concrete, and then didn't miss a beat. Just kept running. And there I am trying to chase him down to make sure that he didn't indeed have a broken jaw like I was sure he must have.