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why is the platypus a mammal if it lays eggs
why is the platypus considered a mammal if it lays eggs
why is a platypus a mammal when it lays eggs
why is a platypus a mammal even though it lays eggs
why is the platypus the only mammal that lays eggs
why is a duck billed platypus called a mammal when it lays eggs
結果 : why is the platypus a mammal if it lays eggs