- The muskrat is about 20 inches long, including its 9-inch tail, and adults weigh 2 to 5 pounds. - Muskrats generally have a reddish-brown upper body with grayish-brown coloration farther down. - ...

Did you know muskrats can hold their breath under water for up to 20 minutes? Dale Gienow from WildNorth has some facts about the tiny rodent.