Annual Weigh-in At London Zoo

England Europe Great Britain London London Zoo Regent's Park UK United Kingdom ZSL Zoo Zoological Society of London animal animal welfare animals annual captivity giant Galapagos tortoise measurement measuring weigh in weigh-in weighing London United Kingdom August 19 2025 zookeeper weigh-in giant Galapagos tortoise photocall annual event ZSL London Zoo animal health vital statistics monitor well-being WIktor Szymanowicz NurPhoto zoo keepers animal care London Zoo tortoise animal monitoring animal welfare photography animal records Galapagos tortoise zoological event animal weight animal health check zoo event wildlife conservation animal management health recording zoo photography.