Order: Rodentia

Family: Muridae

 

The Roof rat is smaller than the Norway rat and is more commonin tropical regions of the world. These rats can be found worldwide. In the United States they are mainly in coastal states, seaports and the southern third of the country.

 

Description: The adult Roof Rat's body length ranges from 6-8 inches long. The dark brown fur is soft and smooth. This rodent also has a white belly. Their tail length ranges from 7-10 inches long. The roof rat has a pointed nose and large eyes and ears.

 

Biology: Adult females have an average of four to six litters per year with six to eight young per litter. The Roof rat has poor vision but all other senses are keen. They are good climbers, runners, jumpers and will swim if forced. Rats have been known to transmit disease to humans through fleas and by contaminating food sources with their urine and droppings.

 

Habits: Rats are nocturnal (active at night). They are cautious and tend to shy away from new objects or changes in their environment. Roof rats prefer to nest in upper parts of structures, but occasionally may be found in sewers, under buildings and in basements. Outside they prefer to nest in high places such as trees and on roofs. Several nests may be found in one area. The rat can gain access into a structure through an opening as small as on half inch. Roof rats prefer to feed on fruits, vegetables and cereals.