The Cardigan Welsh corgi (; Welsh for "dwarf dog") is one of two different varieties of livestock-herding dog breeds known as Welsh corgis (originating in Wales), with the other being the Pembroke Welsh corgi. It is one of the oldest breeds of the British Isles. Cardigan Welsh corgis are known to be an extremely loyal and trainable dog breed, naturally attuned to herding many different animals, from poultry and waterfowl to large livestock such as sheep and cattle. They are also versatile and can live in a variety of settings.

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