What skin covering does a rat have?

A rat's skin is covered with fur. The fur varies in color and texture depending on the species of rat. Some species have sleek , close-fitting fur while others have long bushy tails. The fur of rats helps to protect them from the cold, provides camouflage and helps to regulate their body temperature. Rats are able to move their fur to help them regulate their body temperature and communicate with each other. This movement of the fur is often referred to as "shivering."