Read up on Kopi Luwak, a very unique coffee from Indonesia. I quote: "On these Indonesian islands, there's a small marsupial called the paradoxurus, a tree-dwelling animal that is a kind of civet. These catlike animals were long regarded as pests because they would climb in the coffee trees and eat only the ripest, reddest coffee cherries. What these animals eat, they also digest and eventually excrete. Some brazen or desperate locals gathered the beans, which come through the digestion process fairly intact, still wrapped in layers of the coffee cherry mucilage. Apparently the enzymes in the stomach of the animal add something unique to the coffee's flavor through fermentation."