Question

why does pig toil in the mud during hot summer

Answer 1

it keeps them cool as their skin are thick and full of fat when the mud evaporates they feel cool

Answer 2

Here is ur answer, dear
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Pigs have less sweat pores on their bodies during high temperature days, the temperature of pig's body increases.

So, Pigs need mud to cool off, as they don't have sweat glands.

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