What coat pattern is known for producing extensively marked faces?

The coat pattern recognized for producing extensively marked faces is the Overo pattern. The Overo coat pattern is characterized by irregular, non-connecting white markings that often create striking facial patterns. These markings can appear in various shapes and sizes, giving each horse a unique appearance. The distinctive patterns are typically found on the head and can include splashes of white that can dramatically alter the horse's face and body.

This particular pattern often showcases a variety of colors and can be associated with certain breeds, notably the American Paint Horse, but can also be found in other breeds. Understanding the diversity of coat patterns is essential in horse evaluation, as it helps identify and classify horses accurately.

While other choices like Appaloosa and Paint may also feature distinct markings, the Overo pattern is specifically noted for its unique and extensive facial markings. The Appaloosa, for instance, tends to have spotted coats rather than the irregular white patterns of an Overo. On the other hand, the Paint coat pattern can include Overo traits but is broader in definition and does not exclusively focus on extensive markings. Quartering is not a recognized coat pattern, thus making Overo the clear answer for its defining feature of marked faces.