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How does a hippopotamus differ from a crocodile?
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A hippopotamus is a large, semi-aquatic mammal that lives in rivers and lakes. It has a long, thick, muscular body with webbed feet for swimming. It has a broad head with small eyes and nostrils at the end of its snout. Its skin is smooth and grey or brownish-grey in color. It has a long, pointed, flexible snout which it uses to root around in the mud for food. It has a pair of tusks that are used for fighting and digging. It has a distinctive hump on its back. A crocodile is a large, carnivorous reptile that can swim and walk on land. It has a long, narrow, scaly body with a long tail. It has a pair of sharp teeth for tearing and a pair of powerful jaws for crushing prey. It has a long, slender neck and a small head.