The North American beaver is the world's third-largest rodent - but much cooler than the pests that plague your domicile. Can those mice leaving pellets in your basement build a log cabin on top of a moving stream? Didn't think so.

The North American beaver is the world's third-largest rodent - but much cooler than the pests that plague your domicile. Can those mice leaving pellets in your basement build a log cabin on top of a moving stream? Didn't think so.

Furry, adorable beavers love Battelle Darby Creek Metro Park, which boasts mature hardwood forests and the healthy, serene Big Darby Creek. Naturalists will try to find them during a mile-long hike at twilight on Sunday.

Meet at the bulletin board in the Pleasant Valley area, which is at the park's southernmost end.