The vicuña is a South American camelid that lives in the high alpine areas of the Andes. Related to the llama, it is also thought to be the ancestor of its domesticated relative, alpacas. They rely primarily on their good eyesight to sense the world around them. Their teeth are similar to rodent teeth, in that they keep growing over their lifetimes. They will lick limestone rocks to gain salt. They produce very fine and warm, desirable wool that can only be harvested every 3 years. In Incan society, only the royalty could use vicuña wool.