Sheep and goats have numerous physical differences. Most goats have hair coats that do not require shearing or combing. Most sheep grow woolly coats that need to be sheared at least annually. Lamb tails are usually docked (shortened) whereas goat tails are not. read more
The wild ancestors of today's domestic sheep breeds had long, coarse hair and a short, downy undercoat, which under domestication gradually became wool, while the long hair disappeared. Wild sheep, such as the Mouflon, still do not have wooly coats. No wool Some breeds of sheep remain true to their ancestors and do not have long, wooly coats that require shearing. read more
It is called wool, not fur, and because usually sheep are kept out side all the time, so in the winter, when it gets cold, the wool keeps them warm. read more