Having a large, bulky body corresponds with a relatively small surface area through which an elephant can lose heat when it gets hot. Elephants also lack sweat glands, so they can't cool down through perspiration and evaporation. Their wrinkled skin and large ears, however, help to increase the surface area through which they can lose heat and cool down. Here, Mount Camdeboo's elephant bull, Harry, has also sprayed mud onto his body, which will help him to stay cool.
