/ By Geoff • March 20, 2009 Sometimes we see things so often that we simply forget to ask “why are they like that?†For instance, let’s take a closer look at domestic animals. Dogs, cats, horses, cows, pigs - animals that we live with, and who couldn’t live without us.Common Traits What do all these domestic animals have in common? Now this isn’t a particularly subtle example, but that’s kind of the point. You can see that all of these domestic animals have large white patches - they’ve lost pigment in their coats in some areas. Why do...