Is A Rodent A Mammal?

Is A Rodent A Mammal? Rodents are mammals characterized by upper and lower pairs of ever-growing rootless incisor teeth. Rodents are the largest group of mammals, constituting almost half of the class Mammalia’s approximately 4,660 species. Is a squirrel a rodent or mammal? Squirrel, (family Sciuridae), generally, any of the 50 genera and 268 species