Fauna
Mammal

Yellow-bellied Marmot

Marmota flaviventris

Also known as Rock Chuck

Yellow-bellied marmots are stocky, high-altitude ground squirrels easily recognized by their yellowish chests, grizzled brown fur, and white patches between their eyes. Living in colonies centered around rocky outcrops, these diurnal mammals spend their mornings foraging on grasses and seeds before basking atop sunlit boulders. When danger approaches, a vigilant sentinel whistles a sharp alarm call, sending the harem scrambling into deep underground burrows.

High AltitudeSocialDiurnal
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & preyGrasses, Forbs, Insects
Predators
  • Golden Eagle
  • Coyote
  • Cougar
ThreatsClimate change reducing winter snowpack, habitat fragmentation, and predation
HabitatsAlpine meadows, talus slopes, rocky outcrops, and semi-arid steppes
Life span13–15 years
  1. OrderRodentia
  2. FamilySciuridae
  3. GenusMarmota
  4. SpeciesMarmota flaviventris
Native
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Capable of delivering a painful bite if cornered or handled; observe from a safe distance.
Responsible observation
  • Listen for Alarms: Pay attention to sharp, high-pitched whistles that signal a marmot sentinel has spotted potential danger.
  • Scan Sunlit Boulders: Look atop large rock piles and talus slopes during late morning when individuals surface to bask.
  • Maintain Safe Distance: Do not offer food or approach closely to prevent habituating marmots to human presence.
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Alpine Heights

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