[danmostudco]

Crows are astoundingly intelligent. If you're having a slow day, a quick youtube of "crows solving puzzles" yields some great videos of them solving complicated tasks like water displacement to reach food[0]. I believe raccoons share this achievement.

Additionally, there was a thread on here some time ago[1] by a Dutch Startup[2] about trying to teach crows to exchange cigarette butts for treats inside a tiny device place in parks, I always thought that was a funny idea if you could get the crows to teach one another.

[0] https://www.youtube.com/watch?v=ZerUbHmuY04

[1] https://news.ycombinator.com/item?id=15486368

[2] http://www.thecrowbox.com/