wondered if fur had characteristics that help it to stay clean. He was especially curious about fur that is regularly exposed to water, including the coats of semiaquatic animals such as beavers and ...

This is because they're often made up of some tricky materials, such as down, wool or fur ... clothes to clean them. However, the rules may be different when it comes to winter coats.

Standing on the berm of a small pond, I watch the resident beaver leave its lodge, a silhouetted nose moving through the water. It disappears briefly and returns with a branch in tow. The beaver ...