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Why do elephants have four knees? - Quora
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What is the only mammal with four knees? - Quora
DidYouKnow? Elephants do not have four knees. The front legs are comprised of both wrists and elbows, while the back legs… | Elephant, Save the elephants, Animals
Are elephants the only animals with all 4 legs bending forward? If so, why? - Quora
Why do elephants have four knees? - Quora
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What is the only mammal with four knees? - Quora
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Only One Animal with 4 Knees? - Factual Questions - Straight Dope Message Board
What is the only mammal with four knees? - Quora
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