Rats are various medium-sized, long-tailed rodents. Species of rats are found throughout the order Rodentia, with the genus Rattus containing the most familiar rats. Other rat genera include Neotoma,
Rattus
…Rattus is a genus of muroid rodents, all typically called rats. However, the term rat can also be applied to rodent species outside of this genus. The best-known Rattus species are the black rat (R. rattus) and the brown rat (R. norvegicus…
Brown Rat
A black rat in Bee Cave, Texas
Skeleton of a black rat (Rattus rattus) on display at the Museum of Osteology