Staying_On-Topic in r/intelligentanimals posts a huge number of links explaining why Corvids (crows, ravens, magpies, etc) are amazing.
A squirrel enjoys playing with a ball
, to the tune of "The Mighty Mouse Theme". Strangely satisfying.
Animals at Play
: Stuart Brown, a physician and clinical researcher who founded the National Institute for Play
, describes Norbert Rosing's striking images
of a wild polar bear playing with sled dogs.