The Birch and Swinnerton-Dyer conjecture is an unsolved math problem that’s currently one of the Millennium Prize Problems.  This means that you get a million bucks and some serious props if you solve it.

Opossums do more than mentioned in the comic when they play dead.  Their teeth will show, saliva will foam a bit at the edges of their mouths, and their eyes will glaze over.  As convincing as it is, some opossums will get buried when people believe the act too well.  Moral of the story: If you don’t have a taste for being buried alive, don’t fall into a catatonic state when startled.

There are a lot of jerks in the animal world.  One of those is the chimp.  They’re on land, have opposable thumbs, and are pretty smart, yet they still haven’t mastered pranking.  Clearly, they need a weekend stay at a college dorm.