A video of a ram knocking out a much larger cow is going viral on the web.
In the video (below), the cow and ram rush each other, collide with a loud smack and are both knocked down.
The ram gets back up, while the cow lets out a groan and quietly remains on the ground.
Deadspin.com notes that it's not clear if the cow survived the headbutting incident or not.
However, DailyMotion.com reports that it was actually a sheep that butted heads with the cow.
Liveleak.com describes it as an "accident between a sheep and bull."