About Lepus oiostolus Hodgson, 1840
The woolly hare (scientific name Lepus oiostolus Hodgson, 1840) is a medium- to large-sized hare. It has a head-body length of 40 to 58 centimetres (16 to 23 inches), an average weight of 2.4 to 3 kilograms (5.3 to 6.6 pounds), ears that measure from 11 to 16 cm (4.3 to 6.3 in), and hind feet roughly 10 to 14 cm (3.9 to 5.5 in) long. It has whitish rings around the eyes. Males are slightly smaller than females. Among Chinese hares, the woolly hare has the largest ears, which are darker at the tip than at the base. The auditory bullae, the bone structures that enclose the inner ear, are small. Like other leporids, it has a dental formula of 2.0.3.3 / 1.0.2.3 × 2 = 28 total teeth: two pairs of upper incisors, one pair of lower incisors, no canines, three upper and two lower premolars on each side, and three upper and lower molars on either side of the jaw. Its thick, soft fur varies widely in colour across the species' distribution, ranging from sandy yellow to light brown. Its fur is especially long and curly, giving it a woolly appearance that gives the hare its common name. The fur on its underside and near the hips is lighter in colour than the fur on its back and rump. Its abdominal fur is mostly white, and may have a light brown line along the mid-ventral line. The hare's tail is white above and below, except for a narrow brown-gray stripe on its dorsal surface, and measures roughly 6.5 to 12.5 cm (2.6 to 4.9 in) in length. Its muzzle is elongated and narrow, and it moults its fur coat just once a year. The woolly hare is native to Central Asia, and is found throughout most of the Tibetan Plateau. Its range extends from the border regions of northern Nepal and India (including Sikkim and Ladakh) to western and central China, where it occurs in Gansu, Qinghai, Sichuan, the Tibet Autonomous Region and Xinjiang. The woolly hare mainly inhabits high altitude grasslands. It lives in alpine meadows, shrubby meadows, and upland cold deserts, but also occurs in coniferous or mixed montane woodland. In grassland habitats, the hare requires a certain amount of low-lying vegetation, such as shrubs, to use as shelter. It has been found at altitudes ranging from 2,500 to 5,400 metres (8,200 to 17,700 feet) above sea level. The woolly hare is a shy, usually solitary animal, and is mostly nocturnal, though it has been recorded active during the daytime. It feeds on grasses and herbs, and individual hares regularly return to the same foraging areas at night. During the day, it sometimes rests in the sun in a sheltered position. The breeding season starts in April, and each female produces an average of three young per year across two litters. Woolly hare populations generally have equal numbers of males and females, and young individuals may make up as much as half of a population's total size. A study conducted in Tibet reported population densities ranging from 13 to up to 27 hares per square kilometre. Woolly hares are targeted by several predators and parasites; the species' main predators are birds of prey. Golden eagles and Eurasian eagle-owls regularly prey on woolly hares, as do Siberian weasels. One tapeworm species, Echinococcus multilocularis, is thought to use the woolly hare as an intermediate host.
