Which of the following breeds of cattle is not primarily white to gray in color?

The breed that is not primarily white to gray in color is Limousin. Limousin cattle are typically characterized by their reddish-gold to dark reddish-brown color. This breed is known for its muscle development and leanness, making it popular in beef production.

In contrast, the other breeds mentioned are recognized for their lighter coloration. Angus cattle are predominantly black or red, Hereford cattle are known for their white faces paired with dark red or brown bodies, and Charolais cattle are distinctively white to creamy in color. Each breed has specific traits that cater to different aspects of cattle farming, but Limousin's distinctively reddish color sets it apart from the primarily light-colored breeds.