Perspiration (sweating, transpiration, or diaphoresis)
In humans, sweating is primarily a means of thermoregulation, although it has been proposed that components of male sweat can act aspheromonal cues.[2] Evaporation of sweat from the skin surface has a cooling effect due to the latent heat of evaporation of water. Hence, in hotweather, or when the individual's muscles heat up due to exertion, more sweat is produced. Sweating is increased by nervousness and nauseaand decreased by cold. Animals with few sweat glands, such as dogs, accomplish similar temperature regulation results by panting, which evaporates water from the moist lining of the oral cavity and pharynx. Primates and horses have armpits that sweat like those of humans. Although sweating is found in a wide variety of mammals,[3][4] relatively few, such as humans and horses, produce large amounts of sweat in order to cool down.[5]
(copy from wikipedia! hahahahaha, not copyrighted right.)
Certain animals, such as dogs, do not have sweat glands. These animals perspire and cool down their bodies through panting.
SEE, HUMANS SWEAT AND PERSPIRE AND ANIMALS PERSPIRE!