This article is from the Afghan Hound Breed FAQ, by Janis Nixon with numerous contributions by others.
A current and popular book caused great consternation for Afghan
owners around the world when it rated the Afghan dead last in its
"working intelligence" list. Working intelligence has nothing whatever
to do with the actual "smartness" of any breed. Those breeds developed
to work closely with man will, of course, be more amenable to training
than the clever Afghan, whose job was to tackle dangerous prey on his
own, relying on his own wits to see him through to live and hunt