is a rat's tail hairy?
Tawny-Bellied Cotton Rat (Sigmodon fulviventer) 1  5 inches head to body length. 2  Tail is around 3.5 to 3.75 inches in length. 3  The back is black and peppered with cream white hairs.  Color of the sides are a 1  paler. The belly a pale orange color.  Tail is same length as the body, nearly naked, and bicolor.