Due to the humid and moist conditions that a sloth lives in, moss and other similar plants will sometimes grow in its hair. Sloths also have very bad eyesight. These two factors can sometimes culminate in a sloth grabbing its own arm, whilst thinking it is a branch, and falling to its death!
You can lose a game but, I see guys every week including myself, you lose a game, it's a tough loss, you're down, two weeks later you forgot about it. You know it's amazing how down you were, but all of the sudden you're like it never happened.