Survival of the Cutest for Endangered Species Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email People celebrate a panda's 100-day birth celebration at Chimelong Safari Park on November 7, 2013 in Guangzhou, China. ( ChinaFotoPress/Getty Images ) Produced by Alex Kapelman Produced by PRI and WNYC