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Smooth-toothed pocket gopher
The smooth-toothed pocket gophers, genus ''Thomomys'', are so called because they are among the only pocket gophers without grooves on their incisors. They are also called the Western pocket gophers because they are distributed in western North America. They are considered distinct enough from other pocket gophers to be recognized as a separate subfamily or tribe.
==Natural history==
''Thomomys'' gophers are highly fossorial. They rely on their incisors for digging more than most other gophers. They feed on plants, largely from beneath the surface, but they do come above ground at night. Roots, stems, leaves, and bulbs are eaten. When not directly in an agricultural field they are a benefit to humans by enriching soil and preventing runoff.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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