I ride my mountain bike thru areas that cows are pastured in the East Bay hills.  We always thought that all cows faced the same way because 1) it looked better, 2) they looked better to each other "it's slimming" or 3) the smell drifted down wind.  As it turns out there is a new reason and that is that all cow point North. See the results of Germans, with loads of free time, can learn looking at Google earth.