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There are several different breeds of penguins. Most are black with white stomachs, though some can have different markings. For example, Emperor penguins have an orangish stripe along the sides of their faces. Emperor penguins are also the largest type.

Like other birds, penguins lay eggs, but not in standard nests. Some, like Emporer penguins, lay eggs in nests made of small stones, and they are hatched by the males while the females hunt. Other penguins lay their eggs in any patches not covered by snow or ice.

Penguins eat small fish, but they are also eaten in return by seals, walruses, and many other types of sea creatures.

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