About Animals: Facts About Mammals

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Animals Animals Animal Facts Habitat Facts Animal Pictures From Laura Klappenbach, your Guide to Animals Facts About Mammals Did you know there are 21 groups of mammals? Or that there are nearly 5,000 species of mammals? Find out these facts and more in this article about mammals.... Read more All About Amphibians Amphibians are a group of animals that includes newts, salamanders, caecilians, frogs and toads. There are between 5,000 and 6,000 species of amphibians alive today. The following articles will introduce... Read more See More About:  amphibians  frogs  toads Monotremes Monotremes are a unique group of mammals. Unlike placental mammals and marsupials, monotremes lay eggs instead of giving birth to live young. Monotremes consist of two subgroups, the echidnas and... Read more See More About:  mammals  monotremes  echidnas Amphibians Amphibians are a group of backboned animals that includes salamanders, newts, caecilians, frogs and toads. There are between 5,000 and 6,000 species of amphibians alive today. The first amphibians arose about 370 million years ago during the Devonian Period. The articles listed below provide information about the characteristics, classification and evolution of amphibians. Animals / Wildlife Ads Endangered Animals All Animals Animals Animals Pictures Find Animals More about Animals Birds Fishes Invertebrates Mammals Reptiles Habitat Facts   More from About.com Bake Sale Bestsellers Make your next bake sale a profitable one with these irresistible recipes. More> Macaroni and Cheese Oodles of delicious macaroni and cheese recipes, from old fashioned classics to spiced-up versions. More> This newsletter is written by: Laura Klappenbach Animals Guide Email Me | My Blog | My Forum   Sign up for more free newsletters on your favorite topics You are receiving this newsletter because you subscribed to the About Animals newsletter. If you wish to change your email address or unsubscribe, please click here. About respects your privacy: Our Privacy Policy Contact Information: 249 West 17th Street New York, NY, 10011 © 2012 About.com   Must Reads Animals A to Z What is Evolution? Basic Animal Groups Facts About Animals Animal Characteristics   Follow me on: Advertisement