Terrier describes a type of dog rather than a single breed. The name comes from the Latin word for earth, because these dogs were developed over several centuries to hunt vermin, often by going into burrows. Adoptable terriers are usually small to medium mixes, from about 10 to 35 pounds, with wiry or smooth coats and a lively, confident look.
Most are affectionate, loyal and full of personality, with an independent streak. Barking, digging and chasing small animals are common habits, so a dig-proof fence and steady training go a long way. A dog's size, coat and energy depend on its ancestry, so meeting the dog and watching how it behaves tells you more than the label does.