Complex-toothed Flying Squirrel vs large flying fox

Trogopterus xanthipes compared with Pteropus vampyrus

Taxonomic Classification

Rank	Complex-toothed Flying Squirrel	large flying fox
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Rodentia (Rodents)	Chiroptera (Bats)
Family	Sciuridae (Squirrels)	Pteropodidae (Fruit Bats)
Genus	Trogopterus	Pteropus (Flying Foxes)
Species	Trogopterus xanthipes	Pteropus vampyrus

Evolutionary Relationship

Complex-toothed Flying Squirrel and large flying fox share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Complex-toothed Flying Squirrel

NT — Near Threatened

large flying fox

NT — Near Threatened

Trend: Decreasing ↓

Physical Characteristics

Attribute	Complex-toothed Flying Squirrel	large flying fox
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	30 cm
Average Weight	—	1.1 kg

Habitat & Geographic Range

Complex-toothed Flying Squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

large flying fox

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 6 distinct biome types spanning the Australasia and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Indonesia, Malaysia, Philippines, and Thailand. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Complex-toothed Flying Squirrel

<em>Trogopterus xanthipes</em>, the complex-toothed flying squirrel, is a medium-sized gliding rodent in the family Pteromyidae endemic to China, where it inhabits montane broadleaf and mixed forests at elevations typically between 1,000 and 2,700 metres in provinces including Sichuan, Yunnan, Guizhou, Hubei, and neighbouring regions. This species is the sole member of the genus Trogopterus and is distinguished by complex tooth morphology compared to other flying squirrels. Like all flying squirrels, it possesses a patagium — a gliding membrane stretching between fore and hind limbs — that enables it to glide between trees rather than undertake powered flight. The complex-toothed flying squirrel is nocturnal and arboreal, spending its days sheltering in tree hollows and foraging at night for leaves, bark, seeds, and fungi. Its faeces, known as Wuflingzhi, have been used in traditional Chinese medicine for centuries, leading to trapping pressure in parts of its range. The IUCN classifies this species as Near Threatened, reflecting population decline driven by overhunting for medicinal use and ongoing habitat loss from logging and agricultural encroachment in montane forests. Biological traits including average body mass, lifespan, litter size, and home range are partially documented but detailed population estimates are limited. Conservation measures include legal protections under Chinese wildlife law.

large flying fox

The world's largest bat species, large flying foxes have wingspans reaching 1.5 meters and inhabit tropical forests from Southeast Asia to the Philippines and Indonesia. Despite the alarming name, they feed exclusively on fruit and nectar, making them vital pollinators and seed dispersers for tropical forest trees. Roost in massive colonies of thousands. Listed as Vulnerable due to hunting for bushmeat and habitat destruction.