Playful means Clever. Dog likes to go sleighing up hill and down hill on his own

You know you'll want to show this video clip to someone else.

In the same spirit and the same season, this Russian crow gets the same results with a jar lid.
Carry it back up the roof and do it again.



Which brings me to a book recommendation:  Octopus
These mischievous, big-eyed, distributed-brain creatures are from the mollusc family with snails and clams and what not.  They separated 600 million years ago from the stream that led to crabs, spiders and bugs  and from the stream that led to fish, canaries (via dinosaurs), puppy dogs and humans.

Along with squid and cuttlefish, they are the only members of their family tree with what we call brains, some 200 million neurons distributed down the arms and to the steadfast eyes.  Meet your first aliens.