At the end of 1980s and the beginning of 1990s, China had the technology of drainage without pipes, and now this technology has been popularized. The tubeless drainage technique is to use the bear's own tissue to make a drainage tube through minor surgery. When collecting bile, as long as the flexible catheter is introduced, the bile will naturally flow out within ten seconds. Does not affect the natural activities of bears.
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Black bears are forest animals, mostly inhabiting mixed forests or broad-leaved forests, and are more common in Korean pine forests and oak forests in Northeast China. Evergreen broad-leaved forest in the south of China and monsoon forest are also their ideal habitats. They usually live in mountainous areas, and they can be seen at an altitude of hundreds of meters or even 2000~3000 meters. However, there is a phenomenon of vertical migration. In summer, people climb high mountains, and in winter, they descend to lowlands.
For example, black bears in the Himalayas migrate to an altitude of 3,000-4,000 meters in summer, and descend to valleys with an altitude of 1000 meters or even lower in winter.
Although the black bear belongs to Carnivora, it has a miscellaneous diet and its habits are mainly plants. Buds, leaves, grass, fruits and seeds are all good foods, such as oak pine nuts, wild grapes and mushrooms. They also eat pupae such as ants and like to steal cockroach honey. Small animals such as squirrels, rabbits, birds and eggs are not spared, and sometimes they run to rivers and mountains to prey on fish and shrimp.
Reference source; Baidu encyclopedia-live bears take courage