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There are about 4,780 species of amphibians known to naturalists, and there may be 300 to 500 more that have yet to be discovered. In the United States and Canada there are only 250 species. The world’s amphibians, most of which live in tropical area - Detail...

Birds are warm-blooded creatures, like mammals, but they lay eggs, like most reptiles. All birds have feathers and wings, and most birds are able to fly. Birds are amazingly varied in their shapes, sizes, colors, and behavior patterns. There are more - Detail...

Fishes come in an amazing variety of shapes and colors, but they all have three important things in common: All fishes live in water, have fins, and use gills to get oxygen from the water. We have also included a few sea creatures -- some jellyfish a - Detail...

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