Until the late 20th century, Wire Fox Terriers and Smooth Fox Terriers were considered two types of the same breed. They’re each recognized as a separate breed now, of course, but back in the day, they were bred together. Needless to say (because dog people are nothing, if not always seeking, questioning and challenging) debate remains over these dogs’ respective origins. Some believe the two came from similar roots, while others vigorously disagree. All that said, the most common thinking is that Smooth Fox Terriers were a blend of black and tan terriers with smooth coats, Bull Terriers, Greyhounds, and Beagles, while Wires are thought to have descended from rough-coated black and tan terriers from Wales, Derbyshire, and Durham. Early breeders liberally crossed Wire Fox Terriers with Smooths to give the Wires more white pigmentation, a cleaner-cut head, and a more classical outline. This interbreeding no longer continues, however, and hasn’t for years.

What isn’t disputed is that Smooth Fox Terriers entered the show ring about 15 to 20 years before Wire Fox Terriers, and at first, were classified with sporting dogs probably because they were bred to hunt vermin.

“Wirehaired Fox Terrier On Green” by Dottie Dracos
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