When two red panda babies, Henry and Tink, are born in critical condition at Smithsonian's National Zoo, caretakers make the crucial decision to hand-rear them. There are approximately 10,000 red pandas left in the wild, and very little is known about the species, heightening the pressure to save these two cubs' lives. Take a behind-the-scenes look at how their caretakers are raising them and see what incredible, vibrant animals they're becoming as they approach adulthood.