Which animal is the primary source of milk in the U.S.?

Cows are the primary source of milk in the U.S. due to their high milk production capacity and the widespread infrastructure that supports dairy farming. Dairy cows, particularly breed varieties such as Holsteins, are specifically bred for their ability to produce large quantities of milk consistently throughout their lactation cycles. The dairy industry has focused on improving genetics, nutrition, and management practices to maximize milk yield and quality.

In contrast, while sheep, goats, and pigs can produce milk, their contributions to the overall milk supply in the U.S. are significantly less compared to cows. Sheep and goat milk are often used in specialty markets and products but do not match the volume produced by cattle. Pigs, although they do produce milk, are primarily raised for meat rather than dairy products, making them an unlikely choice as a primary milk source. Therefore, cows stand out as the dominant animal in the U.S. dairy industry.