But Lu Kuangyang, a professor of Biology at Taiwan Normal University who has observed the raising of bears on the mainland, says that in order to take the gall secretion, holes are cut into bears for months and years. And to prevent this large animal from putting up a struggle, the captive animals must be kept in narrow cages where they have no room to move and stretch out.
但看過大陸熊養場的師大生物系教授呂光洋就表示，為了以引流管將膽汁導出，熊身上經年累月被開個洞，此外，為防止這些大型動物掙扎，必須將之關在狹小、不得動彈的籠子中。