Annual weigh-in records animals vital statistics at ZSL London Zoo, London, UK. ZSL London Zoo, UK. 24th August 2026. Capybara, Kiwi, is tempted onto the scales by ZSL London Zoo Keeper at the annual weigh in. The weigh-in is an opportunity for keepers at ZSL London Zoo to make sure the information theyve recorded is up-to-date and accurate, enabling them to monitor each animals health. Each measurement is then added to the Zoological Information Management System (ZIMS), a database shared with zoos all over the world that helps zookeepers to compare important information on thousands of endangered species., Credit:Photo by Amanda Rose Amanda Rose Avalon United Kingdom, London, ZSL London Zoo