And now for a spotlight on our beloved black-and-white beauty, Bai Yun. 🐼 Panda females are only fertile once a year, for 2-3 days! This slow reproduction rate makes it hard for the species to bounce back on its own. But we've been working with partners in China for 30 years on a successful breeding program. #pandapandapanda #wcw #bamboobear #sandiegozoo #EndExtinction ⠀⠀⠀ 📷: Mollie Rivera