The big suffering of the bears

There are about 7,000 bears on bear-bile farms in China. The captive animals are used to supply the voracious Traditional Chinese Medicine (TCM) market. Bear bile has been an ingredient in TCM for thousands of years, but intensive bear farming only came into existence in the 1980s when China's supply of wild bears began running low. The farms, however, have created a new set of problems.

Milking

Usually bile is extracted from the bears' gallbladders twice a day through a surgically implanted tube. The process, called "milking," produces from .338 to .676 oz. (10–20 ml.) of bile each time. Milking is clearly painful for the bears, who are often seen moaning and chewing their paws during the process.

Source: http://www.hsus.org/