weaselly little animals

It occurred to me that I wasn't clear on the differences between a badger, otter, beaver... not to mention, weasel, muskrat, mink, ferret...

Badger and Otter - best of friends (video).

Animal Identification Throwdown: Otter vs. Beaver vs. Muskrat

Animal ID Throwdown Follow-Up: Whither the Mink?

Muskrats and beavers are rodents. Most or all of the others are in the weasel family "Mustelidae".

This year, some of the trees by the pond at work have had the bark chewed off near the bottom. So I'm thinking, beavers. Though I haven't seen them.