Woodchucks, also known as Groundhogs or Whistle-pigs, are one of the 14 marmot species. They are the largest member of the squirrel family and although they are mostly known for their burrows they can also climb trees and are capable swimmers. An adult Woodchuck can grow to 24 inches tall when on their hind legs and weigh as much as 13 lbs.
They prefer areas where the woodlands meet open spaces where they can eat grasses, plants, fruits and tree bark. They tend to gorge themselves all summer long in order to bulk up their fat reserves for winter.