The Yorkshire terrier and the West Highland white terrier rank among the most popular dog breeds in the world. Other popular terrier breeds include Boston, Jack Russell, American Staffordshire, Border, Bull, and Airedale terriers.
There are five different groups of terriers, each having several different breeds. Terriers are often categorized by their size, which varies greatly from 2-70 pounds. They may also be categorized by their purpose or job.
Terriers are active and energetic by nature, and have worked alongside people for centuries. They are popular because they are adventurous, hard working and kind. They adore people very much and can be difficult to kennel for this reason. Terriers are also intelligent dogs that are easy to train.