Who selected who?
Friday Race One of the days the garbage truck comes by is Thursday, so early in the morning I swept up my dogs' poop to put in the trash. This Thursday, while I was doing it, I asked myself a question. I think that's why in this race my wondering began with the relationship between dogs and humans. This relationship began about 15 thousand years ago, although some say it could be up to 30 thousand years ago. Apparently it started with little gray wolves ( Canis lupus) that approached the surroundings of the human camps to feed on the waste. I say small since large wolves were dangerous and would have scared away humans. Another interesting characteristic of these small wolves is that they had to be able to digest plant remains, since our waste contained not only meat. So these little wolves had to be able to digest starches, which is not something wolves do. Probably among the changes that allowed them to use starches were smaller size and docility. Now, every relationship g...