...parasites are fascinating and at times, a little unsettling, to me. There is a nematode that only reproduces in the stomach of a sheep. It enters the body of an ant, migrates through the body to the brain, and seizes control. It 'instructs' the ant to climb to the tip of a blade of grass, and sit there without moving until the grass is eaten. If it is not eaten by a sheep, it passes through the digestive tract of the animal that ate the grass, finds another ant and repeats the process...one of the most famous examples is a parasite that literally devours the tongue of a fish, and attaches itself where the tongue used to be, performs all the functions the 'true' tongue did, minus its 'cut'...life, on a basic level, is all about deception, consumption and reproduction.....imagine that......