A keeper holds a 12 week old Sumatran tiger cub during a routine health check in its enclosure at Chester...
A keeper holds a 12 week old Sumatran tiger cub during a routine health check in its enclosure at Chester Zoo in Chester northern England March 27 , 2015. The cub, one of 3 born at the zoo, was sexed, vaccinated and micro-chipped. REUTERS/Phil Noble