Förmodligen lika sant som skrönan om Bonsai-katterna :0) 

This may be a first...  

A couple from Montana were out riding on the range - he with his rifle and she (fortunately) with her camera. Their dogs always followed them, but on this occasion a mountain lion decided that he wanted to stalk the dogs (you'll see the dogs in the background watching). Very, very bad decision.

The hunter got off the mule with his rifle and decided to shoot in the air to scare away the lion, but before he could get off a shot the lion charged and decided he wanted a piece of those dogs. With that, the mule took off and decided HE wanted a piece of that lion. That's when all hell broke loose for the lion.

As the lion approached the dogs, the mule snatched him up by the tail and started whirling him around. Banging its head on the ground on every pass. Then he dropped him, stomped on him and held himt on the ground by the throat. The mule then got down on his knees and bit the lion all over a couple of dozen times to make sure he was dead, then whipped him into the air again, walked back over to the couple (who were in stunned silence), and stood there ready to continue his ride as if nothing had happened.
Fortunately, even though the hunter didn't get off a shot, his wife got these four pictures: