Rockchuck

The  rockchuck (yellow-bellied marmot) lives in Montana meadows, fields, and other open habitats, sometimes on the edge of forests, and typically above 6,500 feet (2,000 m) of elevation. Their territory is about 4 to 7 acres around a number of summer burrows. Rockchucks choose to burrow under rocks because predators re less likely to see their burrow. When he sees a predator, he whistles to warn all others in the area (giving it the nickname "whistle pig"). Then it typically hides in a nearby rock pile.