Terrier describes a group of dogs rather than a single breed. The name comes from the Latin for earth, because these dogs were developed over several centuries to go after rats, foxes and other vermin, often by following them underground. Most adoptable terriers are small to medium mixes weighing roughly 10 to 35 pounds, with wiry or smooth coats.
They tend to be affectionate, loyal and full of personality, with a stubborn streak, a taste for barking and digging, and a strong urge to chase small animals. In a college town like Richmond, that means planning for daily exercise, secure fencing and early training. Size, coat and energy depend on ancestry, so meeting the dog tells you more than the label does.