"Here's something you haven't seen before," is usually hyperbole. In this instance, it's almost certainly true since scientists have captured this on film for the first time.
So, here's something you haven't seen before. While studying scavenger behavior, scientists at the University of Utah filmed a badger burying an entire cow carcass. It's a behavior scientists were aware of, but no one had previously seen a badger burying an animal larger than itself. (Be warned: the video is a little graphic.)
Much like when you have a nightcap, order an entire pizza, and squirrel away the leftovers in the fridge, the badger couldn't eat the entire meal. To protect its coveted beef, the badger buries the cow to ensure other scavengers don't think the badger wants to share.