The American black bear has a similar habit. Enza are a sign of moon bear feeding in Japan. Eventually, the broken branches come to resemble a nest. . Little is known about moon bear reproduction. They seem to mate most often in spring, but have been reported to mate in autumn and even in December.
Moon bears hibernate in areas of cold weather.
In warmer areas, they may not hibernate at all, except for pregnant females. The female dens in a cave or hollow tree, where she will give birth. Two cubs are commonly born, tiny and blind, during winter or early spring. The cubs' eyes open in about a week, and they soon begin to forage with their mother. They are weaned after about 3 months .