(129) How a crow fools a dog

I once watched something unbelievable:

A crow wanted to eat the food that was in front of a chained dog on a barnyard.

So he hopped to the dog but stayed out of its reach. Then he walked circles around the pole the dog was chained to, so the chain got wound up and thus shorter and shorter.

Then finally the crow walked calm and relaxed to the food and started eating while the dog was barking his lungs out, lol.