Run Away Sheep
If you are a sheep farmer, then you know how important it is for sheep to be sheered every so often. If not dealt with, their wool can get so matted and tangled that it is not only hard for the farmer to sheer the sheep properly, but it can also be uncomfortable for the sheep themselves.
Although not technically official, Shrek is the only sheep known to man that has accomplished such a thing. In a classic turn of events, Shrek was found hiding in a cave in New Zealand, land of the sheep, for 6 years. It had been so long, that Shrek had over 60 pounds of wool on him when he was finally sheered.