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Why Don't Penguins Lay Eggs?

Q: Why don't penguins lay eggs?

A: Penguins do lay eggs. They are called "ovo-sitters" and incubate their eggs in their own body heat. The problem is that penguin eggs are very large and take a long time to hatch, so they need a large nesting area and a long period of time to incubate the eggs. This is why penguins often live in colonies, where they can share the nesting space and incubate their eggs together.

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