The Sun Bear stands approximately 1.2 m (4 ft) tall, making it the smallest member in the bear (Ursidae) family. Males tend to be 10-45% larger than females the former normally weigh between 30 and 60 kg (66-132 lb), and the latter between 20 and 40 kg (44-88 lb). The Sun Bear possesses sickle-shaped claws that are relatively light in weight. It has large paws with naked soles, probably to assist in climbing.The bear uses it to extract honey from beehives.
Unlike other bears, the Sun Bear's fur is short and sleek. This adaptation is probably due to the lowland climates it inhabits. Dark black or brown-black fur covers its body, except on the chest, where there is a pale orange-yellow marking in the shape of a horseshoe. The offspring reach sexual maturity after 3-4 years and may live up to 30 years in captivity. A female Sun Bear can produce 1 to 2 cubs per year. Sun Bears undergo a roughly 96 day gestation period after which the 300 to 400g cub is born blind and hairless. The cub is initially totally dependent on its mother and suckling can continue for about 18 months. After 1 to 3 months, the young cub can run, play and forage near its mother. Male Sun Bears grow larger than females.Other possible predators include the leopard, the clouded leopard, and the Sun Bear's larger sympatric relative, the Asiatic Black Bear. The bear's loose skin on its neck allows it to wriggle its body inside its skin far enough to turn around and bite its attacker when grabbed.
The recent decline in the Sun Bear population can be largely attributed to the hunting of "nuisance bears" that destroy crops and widespread poaching driven by the market for their fur and for their bile, which is used in Chinese medicine.
Sometimes, Sun Bears are captured or bred to be domestic pets--a role for which they are considered desirable, due to their relatively inoffensive nature and small size in comparison with other bears.
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