Terrier is a type of dog rather than a single breed. The name comes from the Latin terra, meaning earth, because these dogs were developed over several centuries to hunt rats, foxes and other vermin, often by following them into burrows. About 30 breeds share the label, from tiny Yorkshire Terriers to the much larger Airedale, and Terrier listings often describe mixes of Jack Russell, Rat, Cairn or Schnauzer lines.
Most adoptable Terriers are small to medium, roughly 10 to 35 pounds, with wiry or smooth coats and a confident, lively outlook. Many are affectionate, loyal companions with big personalities, though barking, digging and chasing small animals are common habits. In Columbia, that mix suits people who like daily walks on the limestone trails and don't mind dusty paws afterward. Size, coat and energy depend on the dog's ancestry, so meeting a dog says more than the label.