Millions of years ago, when the world was warmer, giant reptiles roamed the Earth. Dinosaurs lived on the land, ichthyosaurs and plesiosaurs swam the oceans and pterosaurs flew about in the air. These animals however, have long since disappeared, but there are still more than 6000 different types of reptiles, roaming the face of the Earth today.
Reptiles as we know them in present day, can vary in size and are all “cold-blooded” animals. Cold-blooded simply means that in cold weather, they are unable to stay warm and active. This is why most reptiles live in warmer climate regions. They have thick, scaly skins, which stop them from drying out in the sun and usually live in deserts, jungles, rivers and swa
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