6. Shetland Sheepdog
The Shetland Sheepdog breed is known for being a herding dog and was once counted on for keeping farmers’ crops free of birds. These dogs are very fast and agile, and are quite intelligent. In fact, they are known for being able to learn a new command within just five tries.
5. Doberman Pinscher
The Doberman Pinscher dog breed is known for its intelligence, so much so that these dogs can sometimes outsmart their owners. Despite this, they are fiercely loyal dogs that will do anything to protect their homes. However, it is important to ensure that they are given enough exercise throughout the day so they do not become destructive.