Keeper Paul Kybett dangles a piece of meat to entice Jae Jae, a Sumatran tiger, to jump up next to a...
Keeper Paul Kybett dangles a piece of meat to entice Jae Jae, a Sumatran tiger, to jump up next to a height chart during a photocall to publicize the annual measuring of all the animals at the London Zoo, in central London August 21, 2013. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SOCIETY ANIMALS ENVIRONMENT)