What glands do mammals have that produce to cool them off when their bodies are hot?

Mammals have sweat glands that produce sweat to cool them off when their bodies are hot. Sweat glands are located all over the body, but they are most concentrated on the palms of the hands, the soles of the feet, and the forehead. When the body is hot, the sweat glands release sweat onto the surface of the skin. This sweat evaporates, which takes away heat from the body and cools it down.