The Afghan Hound wears the crown of being ranked as the dumbest or single least intelligent dog breed today.
About the Afghan Hound:
The Afghan Hound also commonly known as the Sage Baluchi, Tazi, Baluchi Hound and Ogar Afgan comes from Afghanistan. The Afghan Hound has a coat that is long and fine and comes in a variety of colors. He is known for his very high activity level, being slow to learn, but with a lively yet reserved temperament.
He is not known for being a great guard dog but as a watch dog, he is a prize. The Afghan loves wide open spaces along with running and playing. They need plenty of exercise so an active family will do great with an Afghan Hound.
Afghan Hounds are normally very healthy, however, they do tend to have a low tolerance to pain, and thus even a small wound can be very painful.