One of the things the locals here do in pasture a few llamas with the livestock, particularly sheep. They apparently protect the sheep from not only bears, but Mtn Lions as well. E
Llamas are getting to be pretty common for guard animals. Some people with put 2 or 3 in with sheep or goats but a single one will work much better. It will bond with the sheep instead of with the other llamas and will be a lot more protective.
If it thinks the crowd is threatened by a dog or coyote, it will put it's head near the ground and charge. I've seen them run a long ways that way and your pet Fido doesn't want to be there when it arrives. They're not slow.
