Rodents are the largest of the mammalian orders, containing over 2,000 species. Familiar rodents include mice, rats and squirrels, but animals such as the porcupine, the beaver and the agouti are also rodents. All rodents have front teeth specialised for gnawing.
Scientific name: Rodentia
The shading illustrates the diversity of this group - the darker the colour the greater the number of species. Data provided by WWF's Wildfinder.