Staff weigh and feed residents at the London Zoo, including a Giant Hooded Katydid, Ring Tailed Lemurs, and a Galapagos Giant Tortoise, during the annual Weigh-In. The event involves recording the vital statistics of over 10,000 animals, helping zookeepers and veterinarians monitor their health, track growth, and even detect pregnancies, all while contributing valuable data to global conservation efforts. | August 19, 2025 | 📷: carl_court #GettyImagesNews zsllondonzoo