The mammals are the class of vertebrate animals characterized by the presence of mammary glands, which in females produce milk for the nourishment of young; the presence of hair or fur; and which have endothermic or "warm-blooded" bodies. The brain regulates endothermic and circulatory systems, including a four-chambered heart. Mammals encompass some 5500 species, distributed in about 1200 genera, 152 families and up to 46 orders, though this varies depending on the classification scheme adopted.
(From Wikipedia, the free encyclopedia.)
All About Mammals EnchantedLearning
Mammals Species of the World (MSW)
National Marine Mammal Laboratory's Education Web Site
Marine Mammal Health and Stranding
Zoos
Lincoln Park Zoo (Chicago)
National Zoo
San Diego Zoo
Wildlife Conservation Society
(The Bronx Zoo)
Lesson Plans
The Teacher's Corner - Teacher Resources
Lesson Plans on Mammals
ProTeacher!
Mammals lesson plans for elementary school teachers
in grades K-5
Mammals Science Lesson Plan
Thematic Unit, Activity, Worksheet
Marine mammals lesson plans, unit and activities
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