In the rest of the nation they may be cows. In Wisconsin they are dairy cattle. Here is a riderΤΗΦs guide to the various breeds you see along and at times on the road.
Dairy cows come in different sizes and shapes. Those having the same size, shape, color, temperament, and abilities are classed by breed. The major US dairy breeds are Ayrshire, Brown Swiss, Guernsey, Holstein, Jersey, and Milking Shorthorn. The largest dairy breed in terms of number of cows is the Holstein.