What physical role does a coating of mud serve on the water buffalo's dark skin?
Answer
It acts as a physical barrier against direct solar radiation.
When the water buffalo coats itself in mud, this layer provides a critical environmental engineering benefit. Because the animal's skin is generally dark—ranging from slate gray to black—and lacks effective evaporative cooling, the mud layer offers direct physical protection. This coating functions as a barrier, physically blocking intense solar radiation from reaching the underlying skin. Furthermore, this barrier helps regulate the rate at which water evaporates from the skin surface after the buffalo leaves the wallow, thereby prolonging the beneficial cooling effect derived from the water moisture retained beneath the mud.

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