When a cow endeavors to scratch his ear, It means a rain shower is very near. When he thumps his ribs with an angry tail, Look out for thunder, lightning and hail. (Traditional Proverb)
You cannot push a cow's head down unless it is drinking water by it's own will (Traditional Proverb)
You are sitting in peace (unharmed) as the nose of a cow that feeds among thorntrees and shows no scars. Luganda, Uganda (Traditional Proverb)