Groundhog
It belongs to the group of ground squirrels. Those squirrels are also known as marmots. The animal may also be called 'Woodchuck', or 'Whistlepig'. Groundhogs dig tunnels and live underground. Every single hole, may have tunnels which lead to as many as ten other holes, the tunnels are very large and can have chambers, like rooms, in them. Groundhogs can make their homes under trees, around buildings and in open fields.