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1. Shetland Sheepdog
Source: pinterest.com
The Shetland Sheepdog, also known as Sheltie or Sheltie dog, is a small breed of herding dog. This Scottish breed was originally bred to herd sheep, but it makes an affectionate and alert companion. The AKC lists its intelligence as being on par with that of border collies and poodles, which are among the most intelligent breeds; indeed, Shelties excel at obedience competitions. They can be taught advanced tricks like opening doors (with their paws), ringing bells to summon guests (on leashes) and turning lights on and off (with remotes). Shetlands can take up to two years to mature physically, but they grow fast mentally; therefore, you need consistent training from day one.