I learned recently that dogs have been found to have mutations that are equivalent to a genetic mutation in humans that would make a person more sociable and less intelligent.
I read about that too.  I wonder why that is?
It's an interesting new discovery. But unfortunately the origin of the domestic dog still isn't clear.
dp you think humans can be selectively bred like dogs?  Maybe thats why.
Human evolution is also interesting, but I'm not sure. There are dogs that don't selectively breed though -- the dingo is an example. It exists in the wild but can't be domesticized!