Biological Information about Lemmings: Lemmings fact and fiction, with details about lemming taxonomy, and the biology of the Norway lemming (Lemmus lemmus).
Everything Muskrat: Links to sites with information about muskrats.
Family Muridae: Taxonomy and description of this family, with photographs.
Striped Mouse (Rhabdomys pumilio): Information, research projects and photographs concerning socioecology of this small mammal, from South Africa's Succulent Karoo Research Station.
The Whole Mouse Catalog: Comprehensive guide to online resources useful to biomedical researchers who use mice or rats in their work.