Cows don't align any way except with their asses into the wind. That way the rain doesn't blow into their eyes.

Sheep do the same, but in a tighter group so they shelter each other. I've seen them shelter from a thunderstorm under one tree, all tucked in close to each other radiating out from the shelter of this tree. From the road it looked like a circle of sheeps bums, but from the top of the tree it would have looked like a shawl spread out or one of those lacy Van Dyke collars so beloved by Gentlemen in the 16th Century.

LTS