Estrella Mountain Community College
Estrella Mountain Community College: Class Mammalia: Got Milk?
This resource contains general information about the class Mammalia and their unifying characteristics.
Wikimedia
Wikipedia: Mammal
Wikipedia, an open-source encyclopedia, provides great information on mammals. Content includes a look at mammal characteristics, origins, classification, and more.
University of Michigan
Bio Kids Critter Catalog: Mammals
This comprehensive site defines mammals in general and then focuses specifically on mammals found in southeastern Michigan. A complete description is given of each mammal along with pictures, sounds, specimens, and classification...