They are related to, and closely resemble, their more famous cousin the ground hog, except that the yellow bellied marmot is usually found is the western portions of North America in elevations typically above 6500 feet in elevation. The ground hog is more wide spread across North America and prefers to live in low land habitats.
Since marmots are a type of ground squirrel most of them live in burrows that they dig in the dirt. The yellow belied marmot typically digs its burrow under rocks to help hide it from predators like bears, wolves, coyotes, and fox. Often one or more marmots will stand guard in an area where many burrows are located, sometimes sitting up on two legs like their cousin the prairie dog. If a sentry spots a predator in the area it will let out a whistle to warn others in the area about the danger. This is how they got the nickname whistle pig.