My POV on it is he jumped into grass, not asphalt, so odds are really good he was OK. He just did a really good barrel roll. The running dog wasn't even fazed. I also don't think the owner would have made an animated gif of their dog being hurt. So I really think the dog was OK. I considered not posting it for a few hours but in the end I decided everyone here was mature enough to handle it.
I crack myself up sometimes.