i've actually seen highlanders in scotland in the fields of ferns. their hair gets all covered with moss. perhaps the moss sticks better with the rough hair. supposedly it does good at repelling insects, similar to dirt, which makes it more difficult for short beaked insects to get at the skin, which probably selects over time for longer beeked insects, which selects for cows that have longer hair that can hold more mud, on and on. it's really amazing, with enough selective pressure, how easy it is to change in a few generations. i wonder what we would do to wildebeasts, if they became profitable to raise. i've never seen a more funnel butted, sloped rumped, light boned, lack of meat, big headed, big fronted bovine in my life. i wonder if there are any polled ones. there are now tuskless elephants as the pressure on killing ones with tusks is too great. man, always taking too much of the cream.