Watch Mice & Other Rodents

Live-action footage introduces characteristics of rodents such as mice, voles, muskrats, and gerbils, highlighting the single pair of upper and lower incisors, which distinguish them from non-rodents such as hedgehogs, rabbits, and bats. Close-up images of the Norway rat's chisel-shaped incisors demonstrate why all rodents have to gnaw constantly to keep their teeth from growing too large. Rodents are shown to be prolific and widespread, with species ranging from the common North American gray mouse to gerbils that live in arid regions and maras that inhabit the southern tip of South America.