Nature's Wildest Weapons: Horns,...

BBC TWO

Tuesday 18 April 2017  21:00 - 22:00 (60 mins)
...Tusks and Antlers - Natural World. Professor Doug Emlen discovers the secrets of nature's arms races. Also in HD. [S]

Nature's Wildest Weapons: Horns,... may be available on playback or on Prime Video (affiliate link)
Nature's Wildest Weapons: Horns,... (BBC TWO) Tuesday 18 April 2017 21:00 - 22:00