The Welsh Corgi is a dog breed that originated in Wales. They are believed to be descended from Swedish Vallhund dogs that came to Wales with the Vikings. Cor gi means "dwarf dog" in Welsh.

An average Welsh Corgi is around 10 to 12 in (250 to 300 mm) tall at the tallest point in the shoulders and weighs approximately 30 lb (15 kg). Originally bred for herding sheep and cattle, Corgis are active dogs, and considered very intelligent. They have proven themselves excellent companion animals and are outstanding competitors in sheepdog trials and agility trials.

Welsh Corgis are generally recognized as two distinct breeds: the Cardigan and the Pembroke. For example, beginning in 1934, the American Kennel Club recognized them as separate breeds. The Cardigan is the larger of the two, with larger rounded ears and a foxy, flowing tail. The Pembroke features rounder ears and is somewhat smaller in stature. The Pembroke was made popular by Queen Elizabeth II of Britain and remains the more common variety. It is also the breed of dog of the character Ein in the popular anime, Cowboy Bebop.

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Diana, Princess of Wales