Donald M. Jones / Hoary Marmot (Marmota caligata) yawning, western Montana

Sean Crane / Hoary Marmot (Marmota caligata) feeding on Indian Paintbrush (Castilleja coccinea) flowers, Mount Rainier National Park, Washington

Cyril Ruoso / Alpine Marmot (Marmota marmota) portrait of a juvenile in alpine habitat, France

Cyril Ruoso / Alpine Marmot (Marmota marmota) two adults fighting for territory, France

Edwin Giesbers / Close-up of Alpine marmot (Marmota marmota) fur and eye, Hohe Tauern National Park, Austria, July

Edwin Giesbers / Alpine marmot (Marmota marmota) reaching hands upwards, Hohe Tauern National Park, Austria, July

Edwin Giesbers / Alpine marmot (Marmota marmota) eating, Hohe Tauern National Park, Austria, July

Edwin Giesbers / Alpine marmots (Marmota marmota) fighting, Hohe Tauern National Park, Austria, July

Edwin Giesbers / Alpine marmot (Marmota marmota), with Mount Grossglockner (3798m) in background, Hohe Tauern National Park, Austria, July

Edwin Giesbers / Alpine marmot (Marmota marmota) standing up in upland landscape, Hohe Tauern National Park, Austria, July

Edwin Giesbers / Alpine marmot (Marmota marmota)holding hands at mouth, eating, Hohe Tauern National Park, Austria, July

Inaki Relanzon / Alpine Marmots (Marmota marmota) standing on hind legs. Gran Paradiso National Park, Alps, Italy, April.