Assertion: groundhog | /r/Synonym | old timers
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text: Groundhogs are also known as woodchucks, groundpig, land beaver, marmot, and some old timers refer to them as a whistle pig as they say if you want a groundhog to stand up and be seen to whistle at them and they will stand at attention looking for the source of the sound (We do not have wild hedgehogs or prairie dogs in Ohio).