Complex-toothed Flying Squirrel vs Red Fox

Trogopterus xanthipes compared with Vulpes vulpes

Key Differences

• Complex-toothed Flying Squirrel is Near Threatened while Red Fox is Least Concern.

Taxonomic Classification

Rank	Complex-toothed Flying Squirrel	Red Fox
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Mammalia (哺乳類)	Mammalia (哺乳類)
Order	Rodentia (ネズミ目)	Carnivora (ネコ目)
Family	Sciuridae (Squirrels)	Canidae (Dogs & Wolves)
Genus	Trogopterus	Vulpes (Foxes)
Species	Trogopterus xanthipes	Vulpes vulpes

Evolutionary Relationship

Complex-toothed Flying Squirrel and Red Fox share a common ancestor at the Class level: Mammalia. (哺乳類)

Conservation Status

Complex-toothed Flying Squirrel

NT — Near Threatened

Red Fox

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	Complex-toothed Flying Squirrel	Red Fox
Diet	—	Omnivore
Average Lifespan	—	5 years
Average Length	—	70 cm
Average Weight	—	6.0 kg

Habitat & Geographic Range

Complex-toothed Flying Squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Red Fox

Habitat

Typically found in a wide range of habitat types.

Range

Widely distributed across Asia (Cyprus, Israel), Europe (8 countries), North America (United States), Oceania and the Pacific (Australia), and South America (Argentina).

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.

Red Fox

アカギツネ（Vulpes vulpes）は地球上で最も広く分布する野生肉食動物であり、北半球全域とオーストラリアの移入地域において北極ツンドラから都市環境まで多様な生息地に適応している。赤みがかった茶色の毛皮、白い腹部、ふさふさした尾で識別できる。高度に適応した雑食性で、ウサギやハタネズミから果物、生ゴミまであらゆるものを食べる。40種類以上の独特な発声でコミュニケーションをとる。