Farmer herds his cows into the shape of pi

Farmer herds his cows into the shape of pi bởi talkingpointsmemo

Derek Klingenberg may be the Internet's favorite farmer, thanks to the quirky videos he makes with his cows.

In his latest clip, Klingenberg celebrates Pi Day by sharing an aerial-shot video of his attempt to herd his cows into the shape of the Greek letter for pi, π.