tinker,

When I was putting my self through university I used to cut firewood during winter break and sell it (for cash). I got access to a property which adjoined a national park which was basically gorge country full of wild dogs and some wild horses.

The feral dogs played havoc with the graziers sheep so he imported a llama who proved very effective in protecting the sheep. He was so effective he would often bail up farm workers and trap them inside their vehicles.

He was a big bastard, over 6' tall. His name, wait for it .... Osama Ben Llama. (I shit you not).