Piglet's Big Movie is a 2003 American animated movie. It was released by Walt Disney Pictures on March 21, 2003. It is based on the characters in the "Winnie-the-Pooh" books written by A. A. Milne. In the movie, Piglet is ashamed of being small. He wanders off into the Hundred Acre Woods, leading his friends to form a search party to find him.