Each year the Zoological Society of London (ZSL) performs an animal weigh in at London Zoo. The height and mass of every animal, of which there are over 19,000, is recorded and submitted to the Zoological Information Management System.
Here we take a look at some of the more notable weigh-ins.
Above, Kumbuka, a Silverback Western Lowland Gorilla, came in at 7 feet.
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