Many mammalian species have developed keratinized penile spines along the glans and/or shaft, which may be involved in sexual selection. These spines.
Penile spines, which are still present in several modern animals, are usually small barbs of keratin—a type of hard tissue—that line the outside.
For all species of the cat family, mating is painful. It's not the biting that hurts the female, it's the male's penis, which is barbed with tiny.
It's a beautiful act between two majestic flying mammals, made possible by the male's gigantic, nightmarish penis spines. Sorry to spoil the.