Jersey Cows: Discover the Origin of this Breed
Meet the Cows
Battle of the Breeds - Churncraft
Guernsey Cattle - The Livestock Conservancy
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U.S. Dairy Cows Are Very Genetically Similar. That's Not Good
History of dairy cow breeds: Holstein - MSU Extension
Is Jersey a cow breed of a pig? - Quora
Guernsey, Dairy, Brown, Hardy
Jersey Cows: Discover the Origin of this Breed
Meet the Cows
9 Facts about Jersey Cows
Ayrshire, Dairy, Hardy & Adaptable
Why Do People Think All Dairy Cows are Black and White?