52. Bichon Frise
The Bichon Frise may look like an adorable little ball of fluff, but it should not be underestimated. These highly intelligent dogs often use their wits to get out of trouble with their owners. They love to play and need a lot of exercise to curb their high energy.
51. Siberian Husky
The Siberian Husky is a highly intelligent dog breed that requires a strict master that can control its intelligence. These dogs are smart enough to learn how to jump over or dig under backyard fences in order to escape, especially if they are on to a scent that interests them. They sometimes have a tendency to ignore commands even though they understand them.