¶ … snakes including an introduction, its physical characteristics, locomotion, behavior, and reproduction.
Snakes are cold-blooded, legless animals that are grouped under the category of reptiles. They are closely related to lizards and are believed to have evolved from them. Scientists classify snakes in the squamata order of reptiles and the sub-order of serpentes. There are over 2,500 species of snakes and they are found on every continent on the Earth except Antarctica. They may range in size from just 5 inches in length (the Texas blind snake) to over 30 feet (the anaconda). Despite being cold-blooded, snakes can survive in a wide variety of environment ranging from the hottest deserts, the depths of the oceans to the extreme cold of North Europe. (Shine, 2005)
Physical Characteristics
All snakes have a long, flexible body covered with overlapping scales whose main function is to prevent water loss. The skin of the snakes, shed regularly, carries color pigmentation that helps it to blend with the background. Snakes are vertebrates and have a highly flexible skeleton. The flexibility enables it to swallow much larger animals than its apparent size would warrant. Its internal organs are similar to other reptiles but have been modified to fit its peculiar elongated shape -- i.e., most of its organs are placed one behind the other. Snakes have passable vision, do not have proper ears, but can detect vibrations. Its sense of smell is highly developed as it uses its forked tongue to detect scent particles in its surroundings. An important...
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