Earlier quoted context omitted.
Dogs are pretty smart though. My one dog is very smart and can easily nab things out of the air. My less intelligent dog can't tell his ass from his elbow and things hit him in the face all the time.
What breeds are your "very smart" and "less intelligent" dog? (Asking because people tend to equate predatory behaviour to intelligence, which is both not accurate and rather alarming)
Smart: Collie, Springer. Not so smart: Greyhound/Lurcher.
I've had collie puppies successfully herd cats.