Puppies are ridiculously cute to begin with, but puppies discovering things? Once you see that, nothing else matters for the rest of the day. This puppy saw his shadow for the first time which meant 8 more weeks of AWWWWW! Take a look as he jumps around the couch trying to catch himself. It's like he's on his own little doggy trampoline. He has endless energy. Does he know that every time he moves, so does the shadow? Meh, y'know what he probably doesn't care.
Check out the video. I dare you not to giggle.