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What are the most important differences between an aardvark and an armadillo?
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1.  An aardvark is a mammal that lives in Africa, while an armadillo is a mammal that lives in South America.
2.  An aardvark has a snout that is covered with bristles, while an armadillo has a hard shell that protects its body from predators.
3.  An aardvark can burrow into sand to escape danger, while an armadillo cannot.
4.  An aardvark weighs up to 20 kg (44 pounds), while an armadillo weighs up to 10 kg (22 pounds).