WIRED ScienceThe Plan to Save the Rhino With a Cervix-Navigating Robot
The duck is famous for two things: really liking bread (even though they’re not supposed to be eating it), and wielding insanely complicated reproductive bits. More specifically, male ducks have corkscrew-shaped penises, while females’ reproductive tracts corkscrew in the opposite direction. It’s a disturbing consequence of an evolutionary arms race, the females’ countermeasure to notoriously aggressive males.
