Virgina Woolf wrote all her books standing. During conscription for WWII, there were nine documented cases of men with three testicles. Both Hitler and Napoleon were missing one testicle. Stalin was only five feet, four inches tall. Stalin's left foot had webbed toes, and his left arm is noticeably shorter than his right.
Swans are the only birds with penises.
A whale's penis is called a dork. Some carnivores, rodents, bats and insectivores have a penis bone, called a baculum. A barnacle has the largest penis of any other animal in the world in relation to its size. Tomb robbers believed that knocking Egyptian sarcophagi's noses off would and therefore forestall curses. The allele for six fingers and toes is dominant in humans.