Groundhogs, also known as woodchucks, are a type of rodent that belongs to the marmot family. They are found in North America, primarily in the eastern and central parts of the continent. Groundhogs are known for their burrowing behavior, as they dig extensive tunnels and burrows underground that can reach up to several meters in length. They are primarily herbivores, feeding on a diet of grasses, plants, and occasionally insects.