Google is really heavy on the joke content this year. There's the Photobombing, Pokémon Maps, Signature Apps, and now Chromecast for Squirrels. What? Small mammals have video they want to watch on bigger screens too.
The video really drives the point home that Chromecast is all about squirrel empowerment and choice. No longer will squirrels have to watch human video content, because now there's Chromecast. As for the paw-friendly app situation, Google is working on that.