IE 11 is not supported. For an optimal experience visit our site on another browser.

London Zoo Animals Tip the Scales at Annual Weigh-In

The height and mass of every animal in the zoo, of which there are over 16,000, is recorded and combined with data collected from over 800 other zoos.
Image: London Zoo Staff Conduct Their Annual Weigh In For the Animals
Kumbuka, a Silverback Western Lowland Gorilla, is measured at 7ft during the annual weight-in ZSL London Zoo on Aug. 21, in London, England.Oli Scarff / Getty Images