When a llama puts their ears back it means they are agitated.
They may start to make a clucking noise as if they are bringing up stomach acid.
Take caution they do not spit on you. When a llama spits it can be so hard it
may bruise the skin. Spitting is a llamas defense mechanism. Most llamas will
opt to run away from a person before they spit, however some will choose to spit
on you.
Video
clip of an agitated llama
