Definition of kangaroo rat
: any of a genus (Dipodomys) of nocturnal burrowing rodents of arid parts of western North America that travel by hopping on their long hind legs and have a long tail and fur-lined cheek pouches
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Merriam-Webster unabridged
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Time Traveler for kangaroo rat
The first known use of kangaroo rat was in 1867
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