Black tortoise of the north Picture
The las one in the series. he's probably my favorite animal and my least favorite woman. His name is Xuan Wu, or Genbu in Japan, and he is the least specifically defined of the four animals. Depending on the translation and whose version of the myth you hear, he can have nothing to do with a snake, have the head and tail of a snake, or have a snake wrapped around him that is constantly at odds with him. I chose the latter because I thought it was cooler-looking.