great for worm/parasite control and keeping the ground flat......but they do also graze down the grass!
Yes, they are good at escaping, but they are also very inteligent, and will respect boundries that they think are electric - and ewes will teach their lambs to leave the fence alone too.....so electric tape can be replaced with string, and for generations, they will respect it. Sheep that are used to being kept in a specific area, will usually stay in that area.
If you have hand reared sheep, then that is better still- they wont run, and they will follow you around like puppies. They are good company for horses, but they need to be sheared and maggots/flies do need to be controlled.
If my new yard owner will let me have a sheep or two, in the future, Id love to have them.....appparently they arent good to handle during pregnancy (infection/disease etc), but as soon as my baby is born, I might try to have lambs again! I used to go riding with my old lambs in tow! Tourists loved it!