1. The metabolism of oxygen consumption of Rattuft losea has negative correlation with body weight. The dominance of corelation is very significant. The oxygen consumption gradualy descends as the ambient temperature ascends (from 10℃ to 30℃). The oxygen consumption has seasonal variation. It is lower in winter than in summer.2. Animal crowding may reduce the loss of heat energy, and also decreas the consumption of food in winter. But Rattus losea Crowding long time, especially, when natural ambient temprat...