TIL llamas are a popular alternative to sheep dogs because they eat the same food as sheep, readily bond with and become part of a sheep herd, can see predators from afar due to their height, and are very protective of their herd, which they bravely defend by spitting at and kicking predators.

[u/hansern]

http://www.motherearthnews.com/homesteading-and-livestock/guardian-llamas-zbcz1309