Overview

• Keepers completed the 2025 weigh-in on August 19, recording fresh data for hundreds of animals.
• Species stepping onto scales included capybaras, Humboldt penguins, a ring‑tailed lemur troop, and Priscilla, a 30‑year‑old Galapagos tortoise.
• Zookeepers used low‑stress tactics such as training, food lures, and concealed or doorway scales to obtain accurate readings.
• Animal operations manager Daniel Simmonds said routine weights help track health and development and can flag pregnancies, with results shared via ZIMS for global comparison.
• The zoo reports caring for more than 10,000 animals across about 4,000 species, and Molly the giraffe was expected to post the heaviest reading at around 700 kilograms.