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Small burrowing rodent once symbolic of Old West. Estimates once placed Texas population in billions. Prairie dogs were so named because of their quick sharp barking and wagging tails. A vegetarian mammal related to the squirrel and ground hog, their homes are craftily built L-shaped burrows, 15 to 20 feet or more long; seldom connected with others in their "town". Declared pests to agriculture and range, town was established March 1964, to preserve remnant of a vanishing species. (1968)