Photos: Zoo animals get annual weigh-in
Credit: Getty Images
LONDON, ENGLAND - AUGUST 22: Zookeeper Vicky Fyson, at ZSL London Zoo, weighs and measures penguins during the zoo's annual weigh-in on August 22, 2012 in London, England. The height and mass of every animal in the zoo, of which there are over 16,000, needs to be recorded. The measurements are collated in the Zoological Information Management System, from which zoologists can use the data to compare information on thousands of endangered species. (Photo by Oli Scarff/Getty Images)
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