LEWA, KENYA - MARCH 24: Prince William, Duke of Cambridge, Royal Patron of Tusk and President of United For Wildlife cools the body of "Matt", a huge tranquilised bull elephant, whilst on a private visit to experience Tusk's front line conservation work in Kenya on March 24, 2016 in Lewa, Kenya. This anti-poaching and research device plays a vital part of the conservation work supported by Tusk.  (Photo by Chris Jackson/Getty Images)