From Wikipedia: In terms of number of species — although not necessarily in terms of number of organisms (population) or biomass — rodents make up the largest order of mammals, with over 40 percent of mammalian species belonging to the order. Information and more....
Mice, Rats, Hamsters, Gerbils, Guinea Pigs, and General Pets are covered in the Net Vet, Electronic Zoo resources for rodents.
Introduction to Rodentia
Univeristy of Berkeley shares information about rodents.
Animal Diversity Web offers information about Rodentia as well as links to more indepth information of each order in the Family.
Rodents and Others
All of your favourite rodents are covered. Good information on each type of rodent along with photos.
Chipmunks of North American
Good photos and information about those cute little chipmunks.
Books about rodents from Amazon.com
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