[gaijin]

Some animals are known as sweet & harmless but harbor an inner RAMBO they only show to predators:

Alpaca Llamas and DONKEYS, omg..!

[Vince Ferrer]

Some animals are known as sweet & harmless but harbor an inner RAMBO they only show to predators:

People get llamas and alpacas to protect their other animals from mountain lions.

[Husker24]

I remember reading a story about an Alpaca that was guarding sheep or something, an Mountain Lion came in the barn and there was a terrible noise. All they found of the lion was a huge blood smear and a couple of teeth. The Alpaca stomped it to death.

[mabarker1]

Ya might want to add Dromedaries to the list.