Marmots include a number of rodents belonging to one group (genus Marmota) in the squirrel family. The woodchuck (also called ground hog), is about two feet long and has yellowish brown fur with white on its snout. It weighs over five pounds. It eats plant greens.
   The yellow-bellied marmol lives in the western mountains of the United States where it is called the rockchuck. It is larger and heavier than the woodchuck. The hoary marmol also lives in the west. Its fur coat is silvery gray. When danger is approaching, it will let out a noise which sounds like a whistle.