A chip off the very old block. This is my granddaughter, playing with a dog her parents are dogsitting for. They didn't add a soundtrack, but I'm assuming it is a melange of growling and giggling. I particularly like the part where Johanna turns away and Anna drops the toy over her shoulder in front of her as if to say, "Wait! I'm still playing with you!"

UPDATE: Gabe posted a version with the soundtrack -- it's quite understated but that makes it even better -- two non-verbal types engaging in an intense bit of play and negotiating the rules as they go along. I tried to swap it into the original posting, but ran into enough snags that I decided to just re-do the whole thing, losing a couple of comments. But I like the small giggles and protests that went along with the game. So there.