Woolly Flying Squirrel
Eupetaurus cinereus
Population size
Life Span
4-15 years
cm inch 

Eupetaurus is a genus of rodent in the family Sciuridae. Members of this genus are known as woolly flying squirrels. They are large to very large flying squirrels found in the highest rocky cliffs near the treeline of the Himalayas and Tibetan Plateau. Due to the inaccessibility of their montane habitat, they are difficult to study.


The Woolly flying squirrel exhibits atypical behaviors and physiological structure for a squirrel species. Moreover, this unique animal is a true record-holder: one of the least-known and insufficiently explored mammals around the globe, the Woolly flying squirrel is also the largest flying squirrel, the longest squirrel and finally, the heaviest of all gliding mammals. This rodent had not been spotted in the wild since 1924 and was believed to have gone extinct until the summer of 1994, when an American zoologist found this species in a remote valley of Kashmir region, in the extreme north of Pakistan. The life expectancy of the Woolly flying squirrel is unknown for today. However, other closely related squirrels are known to live 4 - 5 years in the wild and 10 - 15 years in captivity on average.



Biogeographical realms

Originally, all available information on this animal came from a few specimens, found in Kashmir (northern Pakistan) and northern Sikkim (India). The current range of this species is restricted to a tiny area in Diamer and southern Gilgit districts in northern Pakistan, although the Woolly flying squirrels can possibly be found in India and other neighboring countries. Preferred habitat of these rodents is caves and crevices, found on steep cliffs in dry conifer forests. These areas were originally covered with dense forests, dominated by blue pine, chilgoza pine, junipers, scattered deodar cedar as well as spruce and fir, growing in higher and moister valleys.

Climate zones

Habits and Lifestyle

There is currently very little information on habits and behavior of this species. The Woolly flying squirrels are known to inhabit pine forests, found at high elevations in the Himalayas. They generally occur near cliffs as well as rocky caves and crevices. These rodents are nocturnal animals, spending their daytime hours in shelters. Although winters in the Himalayas are very harsh, these animals don't hibernate. Instead, they remain active throughout the cold winter months, generally feeding upon mosses and lichens, growing on rocks. When buds and cones appear, the squirrels occasionally travel to boreal forests to collect them. Due to its large size and blunt claws, this terrestrial mammal cannot climb trees. Communication habits of this species are unknown, although the squirrels give out a cry, which is thought to occur after death of a loved one.

Seasonal behavior

Diet and Nutrition

These rodents are herbivores, they generally feed upon mosses, lichens, buds and cones. They are known to especially favor cones of Picea morinda - the native spruce.

Mating Habits

early spring
pup, kit, kitten

There is little information on the mating system and habits of the Woolly flying squirrels. However, an immature specimen was found on April 17, suggesting that they may breed in early spring. Females are believed to yield two litters per season.


Population threats

The biggest threat to the Woolly flying squirrel is loss of its natural habitat as a result of mass clear-cutting of forests. Other notable concerns include expansion of human settlements, development of infrastructure and agriculture as well as localized logging.

Population number

The IUCN Red List doesn’t provide the exact number of the Woolly flying squirrels’ population; however, population in the core region of Diamer is suggested to be around 1,000 - 3,000 individuals. Currently, the Woolly flying squirrel is classified as Endangered (EN) on the IUCN Red List.

Fun Facts for Kids

  • Although insufficiently explored, this species is of great zoological interest, since this animal has adapted to its limited and extremely harsh habitat, which is unusual for a flying squirrel.
  • In spite of its name, the flying squirrel cannot fly. Instead, it's able to glide.
  • These animals are able to glide due to the patagium, which is a skinny membrane, found between their front and hind limbs. In order to glide, they simply jump, spreading their limbs and thus stretching the patagium, which acts as a parachute, allowing the squirrels 'fly' in the midair. When in the air, they move between trees, using their arms, limbs and tail.
  • Although these rodents don't hibernate, they are usually less active during the cold winter months. They collect sufficient amount of food in advance to survive through the winter. Each individual may cache as many as 15,000 nuts during a single season.
  • Since the flying squirrels glide instead of actual flying, they cannot rise in the air. Hence, these rodents always jump from higher branches in order to land on lower ones.
  • The flattened tail of flying squirrel is used as a prop, helping the animal balance on tree branches. When gliding, they use their tail to stabilize. When necessary, these animals are also capable of breaking away from their body without any harm.

Coloring Pages


1. Woolly Flying Squirrel Wikipedia article - https://en.wikipedia.org/wiki/Woolly_flying_squirrel
2. Woolly Flying Squirrel on The IUCN Red List site - http://www.iucnredlist.org/details/8269/0
3. Woolly Flying Squirrel illustration - https://creazilla.com/nodes/60287-woolly-flying-squirrel-vector

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