Border Collie

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Border Collie
Origin	Anglo-Scottish border
Traits Height Males 48–60 cm (19–24 in) Females 46–56 cm (18–22 in) Weight Males 14–25 kg (31–55 lb) Females 12–19 kg (26–42 lb) Coat smooth or rough, double coat Colour any; black-and-white and black tricolour (black, tan, white) most common
Kennel club standards KC standard Fédération Cynologique Internationale standard
Dog (domestic dog)

The Border Collie is a British breed of 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 mostly as a working sheep-herding dog or as a companion animal.^[1] It competes with success in sheepdog trials. It has been claimed that it is the most intelligent breed of dog.^[2]