スミソニアン国立動物園さんのインスタグラム写真 - (スミソニアン国立動物園Instagram)「🐊🌡️ DYK: The temperature of a Cuban crocodile's nest determines the sex♂️♀️of the hatchling. To hatch a male, the nest must be between 89.6° and 90.5° F. Above or below and hatchlings are female! 🐊 What else will you discover about Zoo Guardians Animal of the Month? 📲 #ZooGuardians is free to download on both Android and Apple devices. Learn how to create your own zoo: https://s.si.edu/2CmeN5r」10月7日 22時30分