Terrier describes a type of dog rather than one breed. The name comes from the Latin word for earth, because these dogs were developed over several centuries to hunt rats and foxes, often by following them underground. About 30 breeds share the label, and adoptable terriers are often small to medium mixes with Jack Russell, Rat, Cairn, Schnauzer or Chihuahua in their background.
In Plymouth, that background shows up in daily life. Many terriers are affectionate, loyal and alert, with wiry or smooth coats and plenty of opinions. Barking, digging and chasing squirrels or rabbits along wooded trails are common habits, and size, coat and energy vary from dog to dog. Meeting a dog in person tells you more than the label does.