Muskrats are our semiaquatic friends.  With a hairless tail and waterproof turn muck like the beavers they are able to accurately swim where they need to.  If need be they can swim underwater for approximately 12-17 minutes!  They are omnivores and like to live in burrows generally on pond banks and river edges that have underwater entrances to prevent cold and predators.  Muskrats have a strong musky odor to them giving them their name.  These critters are about 15-27 inches in length typically.