Emily Willingham This story is adapted from Phallacy: Life Lessons from the Animal Penis, by Emily Willingham. For humans and other vertebrates, the literal response to the question of what makes a penis is that it consists, to varying degrees, of connective tissue, spongy swellable tissue, muscles, and a blood supply. And it’s pretty straightforward […]
Does a Millipede Have a Penis? Well … Define 'Penis'
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