The sometimes astonishing sex lives of animals are well known, especially the huge range in penis structures, evolved to increase the number of offspring that males father. For example, ducks have corkscrew-shaped penises, and echidnas (also known as spiny anteaters) have a four-headed penis. But what about female genitalia?
For hundreds of years, scientists assumed most animals didn’t have a clitoris. But new discoveries are revealing how female sex organs are just as interesting and varied as male ones.
