| | Parrots - Colorful, Threatened Birds Although parrots are remarkably diverse in color shape and size, they are also among the most easy-to-recognize birds. Their brightly colored plumage, large head, short neck, long tail and curved bill are all hallmarks of the group. Read more | Cephalopods - The Jet-Propelled Molluscs Of all the many ways animals get around—running, climbing, swimming, flying, lumbering, jumping, slithering—the oddest by far is jet propulsion. Only a few groups of animals use this method of... Read more | Gastropods - The Twisted Molluscs While bivalves may well be knick-named the mirror-image molluscs, gastropods are by comparison the twisted molluscs. This "twisted" moniker aptly reflects a unique stage in their development known as torsion. At... Read more | Mammals Mammals are a group of backboned animals that includes about 21 groups such as anteaters, bats, carnivores, cetaceans, elephants, marsupials, primates, rodents and many others. There are about 5,400 species of mammals alive today. Mammals first appeared about 200 million years ago during the Jurassic Period. The articles listed below provide information about the characteristics, classification and evolution of mammals. | | | | Animals / Wildlife Ads | | | | Featured Articles | | | | More from About.com | | | | | | 2011's Cutest Winter Boots Snuggly snow boots are essential for women who live in cold climates, but still want to put their best foot forward. More>
| | | | 10 Budget Work Essentials Figuring out how to pay for a fabulous work wardrobe can be a challenge. These 10 mix-and-max essentials are all under $50. More>
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