Taiwanese black bear, White-throated bear
The Formosan black bear (臺灣黑熊, Ursus thibetanus formosanus ), also known as the Taiwanese black bear or white-throated bear, is a subspecies of the Asiatic black bear. It was first described by Robert Swinhoe in 1864. Formosan black bears are endemic to Taiwan. In 2001, they were voted the most representative wildlife of Taiwan in a half-year-long countrywide voting campaign. They are also the largest land animals and the only native bears (Ursidae ) in Taiwan.
Because of severe exploitation and habitat degradation in recent decades, populations of wild Formosan black bears have been declining. This species was listed as "endangered" under Taiwan's Wildlife Conservation Act (Traditional Chinese: 野生動物保育法) in 1989. Their geographic distribution is restricted to remote, rugged areas at elevations of 1,000–3,500 metres (3,300–11,500 ft).
The Formosan black bear is sturdily built and has a round head, short neck, small eyes, and long snout. Its head measures 26–35 cm in length and 40–60 cm in circumference. Its ears are 8–12 cm long. Its snout resembles a dog's, hence its nickname is "dog bear". Its tail is inconspicuous and short — usually less than 10 cm long. Its body is well covered with rough, glossy, black hair, which can grow over 10 cm long around the neck. The tip of its chin is white. On the chest, there is a distinctive yellowish or white mark that is shaped like a "V" character or a crescent moon. This earns it another nickname — "moon bear". It weighs from 60 kg to 200 kg.
It is believed that it was once widespread across Taiwan (Formosa). It is now mostly confined to the mountain ranges. It can be found along the Central and Snow mountain ranges. The largest population of bears seem to be Lala mountain in Chatienshan Reserve, the (Snow) Mountain area in Sheipa National Park, and Taroko National Park south to Tawushan Reserve through Yushan National Park.
The Formosan bear lives in the mountainous forests in the eastern two-thirds of Taiwan at elevations of 1,000 to 3,000 m (3,300 to 9,800 ft). In the winter, rather than hibernating like Asiatic black bears in temperate areas, they move to lower elevations to find food. They are active for 54–57% of daylight hours, and more active during summer (60%) and fall/winter (60%) than spring (47%). They are primarily active during the day in the spring and summer; and increasingly active at night in the fall/winter when acorns are abundant. They are solitary and usually move around extensively except during the mating season or when caring for cubs. Formosan bears are also the only bears on the planet that make temporary nests.
Although they look clumsy and slow, Formosan black bears can easily outrun humans, reaching speeds of 30–40 km per hour. They are skilled at swimming and climbing, as well. Because of their endangered species status and their habit of avoiding humans, Formosan black bears are rarely seen in the wild. In most encounters the bear retreats and runs away from humans. Even though bears can be aggressive, they rarely attack humans without provocation.
They feed primarily on leaves, buds, fruits, roots, although they also eat insects, small animals, and carrion. Diets of bears monitored in Yushan National Park include succulent vegetation in spring, soft fruits rich in carbohydrate in summer, and fat-loaded hard mast (e.g., acorn and walnut) in fall/winter.
As solitary animals, Formosan black bears do not stay in fixed shelters, except for females during their breeding period. The bear's courtship period is very brief. A male trails after a female for a few days. After mating, they return to their solitary lives. Females reach sexual maturity at age 3–4 and males reach sexual maturity at age 4–5, usually one year later than females. Mating is usually from June to August and pregnancy lasts for 6–7 months. Thus, wild females usually give birth between December and the following February.
Each birth produces 1–3 cubs. Cubs will be nursed by mother for about six months. When they are strong enough to leave the den, bear cubs will remain with the mother for approximately two years, until the mother enters the next cycle of estrus and drives the cubs off. This forms the 2-year reproductive cycle of Formosan black bears.
