Sheep are extremely scary. The following is an excerpt from a guide on how to avoid sheep attacks.
"The majority of sheep are members of the secret order of Artiodactyla. Some of their rituals are known to a handful of researchers who for centuries have warned people about this dangerous cult. The exception are the black sheep. There are no known cases of black sheep attacking humans."
More information can't be shared without provoking they who shall not be named. Do your own research to be enlightened.