London Zoo's annual weigh-in event is underway, involving over 14,000 animals, from lions to meerkats, and aims to monitor their health and wellbeing. Weigh-ins help zookeepers track growth, detect pregnancies, and provide crucial data for conservation efforts. The information collected is shared globally through the Zoological Information Management System (ZIMS) to aid the care of thousands of threatened species. This year's event also followed the removal of a Banksy artwork from the zoo for safekeeping, replaced by a replica. Weigh-in events like these are essential for the expert care of zoo animals and contribute significantly to global conservation programs.