Mammal Scavenger Hunt site 1: All about Mammals http://www.kidzone.ws/animals/mammals.htm
Mammal Scavenger Hunt site 2: Zoom Mammals http://www.allaboutmammals.com
Mammal Scavenger Hunt site 3: Bear Tracker's Animal Den http://www.bear-tracker.com
Mammal Scavenger Hunt site 4: National Zoo http://nationalzoo.si.edu/