I knew someone would bring that up, and, almost put it in the response to begin with. I just figured it would go without saying that they didn't teach themselves to sniff out cocaine or smell out termites or cancer cells, or guide the blind or make sick or elderly people feel better, but, I guess I was wrong in that assumption. But, the fact is, they fill a void that humans alone can not. There are simply things that a dog can do that humans cannot. And, dogs also teach humans things, as well. That's why they have programs like the ones where dogs are brought to prisons or detention halls. They teach people respect, love, and, responsibility. So, I'd say it works both ways.