There's only a handful of animals on earth that go through menopause, where females get to hang up the ovaries and enjoy a change of life. So, why have we (humans, chimps and some toothed whales) established a sexual retirement of sorts? What is everyone else missing out on? Featuring: Associate Professor Kevin Langergraber, Primatologist, Arizona State University. Charli Grimes, PhD student, University of Exeter. Production: Belinda Smith, Reporter/Producer.  Ann Jones, Presenter/Producer. Petria Ladgrove, Producer. Additional mastering: Hamish Camilleri. This episode of What the Duck?! was produced on the land of the Wadawarrung, Wurundjeri and Kaurna people.