What is the only animal to have four knees?
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Elephant
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Tiger
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Rhino
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Moongoose
A
Correct answer
Explanation
Elephants have four knee-like joints in their front legs (what appear to be 'front knees' are actually wrist joints anatomically, making the total appear as four knees). This is a common trivia fact. Tigers, rhinos, and mongooses have standard quadruped anatomy with two true knees.