No. 10 in our countdown of smartest animals is the rat, a highly intelligent yet much-maligned animal in Western cultures. Widely used in research, the lab rat has been known to find shortcuts, loopholes and escape routes in the laboratory experiments designed by the top scientific minds of our time. In Chinese culture, the rat is revered for its cunning and resourcefulness. And for good reason - the rat has successfully colonized every continent on Earth except for Antarctica. And if history is any indication, they'll be there too soon enough.
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