Pigs are clean animals! They have a place which they use as a toilet which is well away from the places where they eat or drink.
Despite common beliefs, pigs prefer a clean environment (they wallow in mud to cool themselves but if given the choice of mud or sprinkler systems, they will elect for the clean water). If given enough room, pigs will defecate in one corner of a pen and sleep in a different corner.
Contrary to popular belief, pigs are actually cleaner animals than cows, sheep, goats etc. Pigs will not defecate near the area where they eat (if they can avoid it), unlike cows and other farm animals that defecate wherever the urge strikes them.
Pigs cannot sweat, and the only way they can cool off in the hot summer is by wallowing in mud. For this reason pigs are considered dirty animals.
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