除了人之外,也有一些动物会出汗。只不过人类的小汗腺比较多,但大部分的动物却是大汗腺比较多。小汗腺比人类还多的动物是没有的。为什么会有这样的差别呢?由于汗腺和骨骼不同,它难以留下化石,所以我们还无法了解到真相,但有以下几种推测。早期的哺乳类,体内没有调节体温的机能,只能靠行为来调节体温。天热的时候用水洗澡,或躲在树阴下不活动,以此来应对炎热。即使现在,也还能看到夏天猪泡泥澡, In addition to people, there are some animals that sweat. Only human sweat more, but most animals are more sweat glands. Animals with more sweat glands than humans do not. Why is there such a difference? Because sweat glands and bones different, it is difficult to leave fossils, so we can not understand the truth, but the following speculation. Early mammals, the body does not regulate body temperature function, only by behavior to regulate body temperature. Heat the water when the bath, or hide in the shade under the inactive, in response to the heat. Even now, you can still see the summer pig bubble bath,