6- Shetland sheepdog:
This breed belongs to the working dogs of farms. The Shetland sheepdog is working as a farm guardian his job is to keep sheep and birds far from the garden of the farmer. It seems like it is a boring and simple job, but actually it requires lot of efforts and patience to accomplish his daily mission.
The Shetland sheepdog is so devoted to his owner and he is trying his best to keep his family safe. Why he is considered as intelligent dog is simply because of his ability to learn brand new tricks and commands with only few repetitions.