Beavers have done more to shape North American landscapes than any animal beside humans. We don't notice them much today because there aren't many left, but before colonization, North America was home to hundreds of millions of these furry engineers. This week, we show you why Earth's second largest rodent is more amazing than you ever knew, and why they're the smartest thing in fur pants.

Originally released by Knowledgemotion, 2017. Streaming video file encoded with permission for digital streaming by Infobase on February 21, 2020.

Beavers: The Smartest Things in Fur Pants (4:41); .