在尼日利亚农村,有一种会喷水的牛,名叫“息西牛”,这种牛的嘴能整日不停地向外喷水,只有在吃草和饮水时才停止。喷水牛的身体很大,脖子下生有一个下垂的大囊,每次饮水时,都将大量的水贮(zhù)入垂囊中,休闲时再慢慢地把囊水吸到嘴里向外喷射。经过动物学家们的研究,原来这种牛 In the Nigerian countryside, there is a kind of watering cow called “West Nissei,” whose mouth spouts water all day long and stops only when grazing and drinking water. Water buffalo body is large, there is a drooping bulge under the neck, each time drinking water, will be a lot of water storage into the pouch, leisure and then slowly to the pouch to the mouth Jet outward. After the zoologist's study, the original cow