Reinhard Kraasch [creativecommons license] via Wikimedia Commons
The woodchuck, also called groundhog, land beaver, mouse bear or whistle-pig, is a type of marmot or large ground squirrel found primarily in lowland areas of North America. Its short, strong limbs and curved, thick claws are well-suited to digging and burrowing, one of the woodchuck’s main activities in the wild. It also sports rounded ears that can close off the ear canal to prevent dirt and debris from entering it while burrowing underground.
Lab Anim. (NY) 43, 117 (2014).
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