Mississippi Mammal Checklist

Biologybase Mammals of the world

TheUCMP Hall of Mammals (University of California Museum of Paleontology) gives a good introduction to what mammals are, and what are mammals

Bishop Museum searchable Hawaiian mammal checklist can tell you about Hawaii's mammals - introduced and endemic

AfriCam a WAY cool site with stationary and mobile live pictures from South African game reserves/parks, usually near waterholes. If you go in the evening in North America, it's about dawn there. They bill themselves as the first Virtual Wildlife Park