I liken it to races like in humans. Different genetic features for adaption to different environments. Or just variation in color.
The thing about what we classify as ‘races’ is that the traits we use to identify the differences in races (skin color, some small facial structure issues) are genetically so insignificant that the genetic differences between individuals is far more different than that we identify between races. It is more of a man made construct than it is any sort of real classification.