Curious George (2006)

S1E29 Curious George and the Dam Builders

George is enjoying a delightful day sailing his toy boat on a big pond. However, when he returns the next day, he discovers the water level has significantly dropped. He soon learns that a family of beavers has constructed a dam, blocking the water and preventing him from playing. Inspired, George decides to create his own dam to form a new pond. Throughout his adventure, he realizes that water plays a crucial role in a beaver's habitat, just as much as the dam itself.