Marmots live in large colonies, excavating deep burrows in which they
hibernate during winter. As many as 10 to 15 closely-packed animals
crowd together in a single, carefully lined burrow. During summer,
they feed outside their burrows and give loud whistles when sighting
an intruder. (They have sentinels and thus a well structured community.)
The Himalayan marmot is about 2 feet long with a 5 inch tail.