The German Shepherd, Border Collie, and other breeds are considered to be some of the smartest dog breeds in the world. German Shepherds are known for their intelligence, loyalty, and obedience, making them one of the most popular breeds. Border Collies are renowned for their herding abilities and their intelligence, making them one of the most intelligent breeds. Other breeds that are considered to be among the top five most intelligent dog breeds include the Poodle, Golden Retriever, and Doberman Pinscher. All of these breeds are highly trainable and have the capacity to learn quickly and retain information. They are also known for their loyalty and obedience, making them great companions for families.