Supposed Jurassic Beaver

Dinosaur Revolution was a Discovery Channel documentary that aired in 2011and consisted of four episodes that explored topics from evolution to defensive and offensive tactics of different dinosaurs. The third episode specifically examined how dinosaurs and their contemporaries hunted one another or defended themselves from predation. That episode included what some refer to as a "Jurassic Beaver", though we know better that Castorocauda was not related to beavers at all. The episode is available (for the moment) online and you can get to it below: