The Border Collie is a breed of British herding dog of the collie type of medium size. It originates in the region of the Anglo-Scottish border, and descends from the traditional sheepdogs once found all over the British Isles. It is kept predominantly as a sheep-herding dog or as a companion animal. It competes with success in sheepdog trials. Some have claimed that it is the most intelligent breed of dog.
Image credit: CC BY-SA 3.0
Adapted from Wikipedia, CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Border_Collie