Nelson is an old-fashioned dog who doesn't let a rude gesture go unanswered. His Instagram is mostly adorable puppy pics, but it's his habit of attacking his master any time his dignity is affronted by a flipped bird that's made him an internet star this week. It may seem extreme, but on the other hand, why is this guy flipping off his dog?

Nelson also lives with a buddy named Joey, with whom he shares an Instagram.