Penile Spines
NSFWMany mammalian species have developed keratinized penile spines along the glans or shaft, which may be involved in sexual selection.
Many mammalian species have developed keratinized penile spines along the glans or shaft, which may be involved in sexual selection.
Bedbugs have entered the chat.
Yeah “Who needs a hole” kinda guys…
My biology teacher then commented about all the features other animals evolved - bones, spiral shape, detaching one for long distance use in octopuses…
Yeah ours are kinda boring guys.