Donkey Defense Mechanism

It has been found that donkeys can chase wolves away as soon as they suspect the herd is in danger.

In the nature, donkeys grab wolves by their neck with their mouths and occasionally kick them with their forelegs.

My idea is to make an defensive mechanism for donkeys when they encounter wolves and dogs trying to attack sheep nearby. However, kicking the wolves would be too violent for a game like Minecraft, so you shouldn't include that into the game. My solution is that wolves are grabbed, not killed, but carried out of sight of the sheep so they won't see and attack the sheep.

Even dogs seem to get attacked very quickly by donkeys on farms because they hate dogs and wolves. 

There are farmers who use donkeys to protect their animals from wolves, thats why my second idea is that sheep can be spawned near a village with a generated fence around them as well as donkeys, who will then protect the sheep.