Pigs do not have functional sweat glands like humans do. Instead, they rely on other methods to regulate their body temperature. Pigs lack sweat glands over most of their bodies, except for a few sweat glands located on their snouts. These sweat glands are not sufficient for the pig to cool itself efficiently through sweating, especially considering their large body size.
To stay cool, pigs engage in behaviors such as wallowing in mud or water. When they wallow in mud, the moisture evaporates from their skin, helping to cool them down. Additionally, pigs may seek shade or water sources to lower their body temperature. These adaptive behaviors help them manage their body heat effectively, even without the ability to sweat like humans do.