1. Holstein: This is the most common breed of brown and white cows. They are typically black and white, but some have brown patches.
2. Ayrshire: These cows are known for their reddish brown and white markings.
3. Guernsey: Guernseys are a breed with a distinctive fawn-colored coat with white markings.
4. Jersey: Jerseys are known for their light brown and white coats.
5. Brown Swiss: This breed has a rich brown coat, often with white markings on the face, legs, and tail.
So, depending on the breed and specific markings, a brown and white cow could be called a Holstein, Ayrshire, Guernsey, Jersey, Brown Swiss, or simply a "brown and white cow."