two domestic dirty hogs and sows dig mud with their snouts around mud pit with bilge, mud and murky water in pig pen during hot

agriculture animal bathe big bilge boar day dig dirt domestic farm farmyard filthy free range hog livestock mire mud muddy murky nature oink omnivorous organic outdoors pig pond pool potbelly rural sludge snout soil sow stand summer sunny swine thermoregulation tree wallow water