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a medium-sized, long, muscular dog with very short legs. Two types are recognized as separate breeds: Cardigan Welsh corgi, which is larger, has large, rounded, erect ears, a short, hard-textured coat, and a long, bushy tail. Pembroke Welsh corgi, which is more common, has a shorter body, smaller, pointed, erect ears, a medium length coat, and a very short, natural or docked, tail. The breed is predisposed to cystinuria, intervertebral disk disease and progressive retinal atrophy.