CANBERRA, AUSTRALIA - NOVEMBER 11:  Camilla, Duchess of Cornwall pats Samson, a truffle finding dog during a tour at French Black Truffles farm on November 11, 2015 in Canberra, Australia. The Royal couple are on a 12-day tour visiting seven regions in New Zealand and three states and one territory in Australia. (Photo by Sean Davey - Pool/Getty Images)