When trying to spot a real-life human, this alien family understands that it's important to know exactly what to look for. On a visit to one of our planet's zoos, they ready their camera and try to follow their not-very-well-informed Aliens' Guide to Earth. Through persistent trial and error (webbed feet? feathers? a striped coat?) these most unusual tourists are able to discover just what makes us humans the "most stupendous" animal of all! Hint: It rhymes with Dial.