Something Amazing About A Cactus

Did you ever wonder why God put thorns and  spines on many desert plants such as cactus?  As I have watched through many droughts, I realize that these plants would probably be extinct today if they did not have some kind of protection from animals eating them.  Rabbits and cows are a few animals who will eat a cactus in a drought, but the sharp spines hinder them at least somewhat.  Maybe that is why these plants have thorns!