Yes, it is true there are sheep that have been taught to pull carts, sleighs, wagons, to carry packs and or panniers. Some people have taught Sheep to do tricks a bit of Agility and other tasks. Although I have owned both Hair and Wool Sheep, I have not taught them to do that much.

Sheep, as I understand it from people who train them on my cart_wagon_goat elist at the Yahoo Groups site, are no harder to teach to work then goats. However, any goat harnesses will fit a sheep.

I was told years ago by sheep keepers, that sheep's legs are not as strong as goats therefore sheep can not pull or pack as much weight as a goat is able to.

Sheep are not quite as coordinated as a goat so agility training may take a bit longer and you will have to set up a more stable course with lower and wider agility pieces.

But yes. Sheep, rams and ewes and lambs can do more then just grow wool.