"Wirehaired Terrier" describes a coat more than a single breed. It's a common alternate name for the Wire Fox Terrier, the English fox-bolting terrier made famous by Asta in The Thin Man and Snowy in Tintin. It's also used for wire-coated terrier mixes with Jack Russell, Border, Cairn or Schnauzer ancestry. What they share is a dense, crisp outer coat over a softer undercoat.
Most are sturdy, quick and bright, with a bold streak and a curious nature. Typical terrier habits include barking, digging and chasing small animals. The wiry coat sheds little but needs regular stripping or clipping to stay tidy. Since ancestry varies, a dog's actual size, energy and coat tell you more than the name on the listing.