Long-tailed Marmot

Fascinating facts about the Long-tailed Marmot

• A long-tailed marmot can hibernate for up to 8 months of the year — longer than any other marmot species — burning almost nothing from a fat store built over just 4 months of summer feeding. In the Tian Shan and Pamir mountains where they live, winter lasts so long that these rodents must compress an entire year's survival into the brief window between snowmelt and the first freeze. Their heart rate drops from 80 beats per minute to just 5.
• At 2.5 kilograms, a long-tailed marmot is built like a compact storage tank: roughly 30% of its body weight is pure fat by autumn, stored in depots around its organs and under its skin. A squirrel the same size would starve in weeks during hibernation. This marmot's metabolism is so efficient that it loses less than 1% of its body weight per month underground — a feat of biochemistry that lets it sleep through blizzards without waking to eat.
• The tail that gives this marmot its name is a flag, a thermometer, and an early-warning system all at once. When alarmed, they hold it upright like a banner to warn the colony that a snow leopard or golden eagle is nearby. The tail is also furred densely enough to act as an insulating blanket when curled around the body during the coldest nights — a furry scarf they always carry.
• Long-tailed marmots live in colonies of up to 30 individuals across high-altitude meadows at 3,000 to 4,500 metres, where the growing season is so brief that grass barely flowers before it freezes again. A single marmot must learn exactly which plants are safe to eat and which are poisonous — knowledge passed through generations by mothers who teach their pups which meadow patches yield the most calories per bite before the window closes.
• Their burrows are architectural marvels built 1.5 to 2 metres deep, with multiple entrances and a main chamber lined with dried grass that insulates like fibreglass. Some burrows are used by the same family for over 10 years, deepened and refined across generations until they become multi-chambered fortresses. In a landscape of bare rock and ice, these tunnels are the only reason the species survives at all.

At a glance

About the Long-tailed Marmot

In the rugged, sun-scorched mountains, the long-tailed marmot reigns as a resilient sentinel, its piercing whistle echoing across the rocky outcrops as it surveys its kingdom with a discerning gaze. With a fluid, almost languid motion, it navigates the treacherous terrain, its sturdy legs and sharp claws propelling it with ease across the boulder-strewn landscape. As it disappears into the labyrinthine tunnels of its subterranean lair, the marmot's remarkable adaptability and tenacity are a testament to its enduring presence in this harsh, breathtaking environment.

Discover more wildlife