老鼠自杀之谜最近，中国新疆一次百万老鼠集体自杀令人吃惊．科学家们没有发现这些老鼠有疾病的先兆．自杀的老鼠是松鼠科的一种，属啮齿目。它们跳进湖河中将自己淹死。动物学家分析，这种反常举止是以一种怪谬方式维护它们物种的行为．当一个地区的啮齿目动物群体密集度... The mystery of mouse suicide Recently, a million mice in Xinjiang in China committed suicide by surprise. Scientists have found no sign of illness in these mice. Suicide mice is a kind of squirrel, is a rodent. They jumped into the lake to drown themselves. Zoologists have analyzed that this anomalous behavior is to maintain the behavior of their species in a weird way. When an area rodent population density ...