Rodent Temporal range: early Palaeocene – Recent 61.7 mya to present
Single rat
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
(unranked):	Glires
Order:	Rodentia Bowdich, 1821
Suborders
Sciuromorpha Castorimorpha Myomorpha Anomaluromorpha Hystricomorpha

A harvest mouse

Capybaras

Rodents (from Latin rodere, "to gnaw"), are mammals of the order Rodentia, which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws.