Guernsey cattle, breed of dairy cattle developed on the islands of Alderney, Guernsey, and Sark near the north coast of France. First imported to the United States in about 1830, they are fawn-colored with white markings and are of medium size. Their milk is golden in color and rich in vitamin A. The average milk yield is a little higher than that of the Jersey, but the butterfat content is slightly lower.

Guernsey, island, 25 sq mi (65 sq km), in the English Channel, second largest of the Channel Islands. Guernsey bailiwick (2005 est. pop. 65,000) includes Alderney, Sark, Herm, Brechou, Jethou, and smaller islands. Guernsey has a low beach in the north and rocky cliffs along the south shore. The shipping and distribution center and chief town is Saint Peter Port. Exports include dairy products, fruits, flowers, vegetables, and Guernsey cattle. It is a tourist site.

Breed of dairy cattle that originated on the Channel Island of Guernsey. Like the Jersey, it is thought to have descended from French cattle. Larger than Jerseys, Guernseys are fawn-colored and marked with white. Their milk has a pronounced yellow color. First exported to the U.S. in 1830, they are found also in Australia and Canada.

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