Old World Mice and Rats

The Muridae, or murids, are either the largest or second-largest family of rodents and of mammals, containing approximately 870 species, including many species of mice, rats, and gerbils found naturally throughout Eurasia, Africa, and Australia.

The name Muridae comes from the Latin mus (genitive muris), meaning "mouse", since all true mice belong to the family, with the more typical mice belonging to the genus Mus.