Melanism is an undue development of dark-colored pigment in the skin or its appendages and is the opposite of albinism. It is also the medical term for black jaundice. The word 'melanism' is deduced from the Greek: μελανός, meaning black pigment. Black Rat, All Black, Black Animals, Cute Animals, Mexican Black Kingsnake, Melanistic Animals, Rat Snake, Corn Snake, Beautiful Snakes