Where do birds sleep?

Why are male birds always the ones with bright colors? Why don't the females have bright colors too?

Why do some animals have eyes that face forwards (like monkeys and dogs) and other animals have eyes that point to the sides (like birds and rabbits)?

Why does a platypus have a duckbill? 

Why do cheetahs and leopards have spots?

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9-year old Nilo answers your questions about animals.

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