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Do bigger brains make smarter carnivores?
A bat-eared fox tries to open a puzzle box during an experiment to test intelligence.
Credit: Sarah Benson-Amram, Greg Stricker and Kay Holekamp
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An Arctic fox looks around before attempting to investigate what's in the box.
Credit: Sarah Benson-Amram, Greg Stricker and Kay Holekamp
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The Arctic fox decides to go for it, pawing at the box.
Credit: Sarah Benson-Amram, Greg Stricker and Kay Holekamp
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Next it's the leopard's turn. It, too, takes its turn at the puzzle box.
Credit: Sarah Benson-Amram, Greg Stricker and Kay Holekamp
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An Amur tiger swipes at the puzzle box.
Credit: Sarah Benson-Amram, Greg Stricker and Kay Holekamp
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Then the snow leopard tries.
Credit: Sarah Benson-Amram, Greg Stricker and Kay Holekamp
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