It's a Big Big World is an American children's television series that aired on PBS Kids from January 2, 2006, to January 8, 2010. The series was created by Mitchell Kriegman, the creator of the Muppet television series Bear in the Big Blue House. After the series ended, reruns continued to air until April 30, 2010. The show revolves around a group of animals living in "The World Tree" in the rainforest along the Amazon River with the Brazilian highest mountain Pico da Neblina as the mountain background. The main character and host is Snook the sloth.

The series was taped at Wainscott Studios (now the LTV (Local TV, Inc.) studios) at the East Hampton Airport industrial complex in Wainscott, New York. Wainscott Studios is the only studio to use Shadowmation, a technique created by Mitchell Kriegman, to bring the puppets to life by combining live-action animatronic characters with computer generated animation in real time, high definition virtual environments powered by video game engines.