 Pigs don't sweat. You know, cows don't sweat. So these are animals that you definitely make sure have a way to cool off. There was a reason why pigsty has always had mud holes in them because pigs like to just burrow down in that cooler mud. Cows will wander into stock dams so they can stand in some water. Also gives them some relief away from flies that with the water we have had, that's really going to increase our fly mosquito immunity.