Terriers are known for their high energy, and the Norfolk is no exception. If you love terrier breeds but want a small one, the Norfolk might be the perfect option because he's one of the smallest of the group. According to the AKC, Norfolk terriers grow to be about 9 to 10 inches (22 to 25 centimeters) tall at the shoulder and only weigh around 11 pounds (4.9 kilograms) as an adult, with females often being even smaller than males [source: AKC]. Although this terrier is tiny, his energy and love of people is super-sized.
Norfolks are native to England, where they were originally kept to hunt rats on farms. Although they remain favored farmhands, most Norfolks enjoy an easy-going life with a family and adapt well to most types of homes. Members of this breed will be loyal to their entire brood, not showing preference for one family member over another, and will generally accept other animals and strangers with ease. The Norfolk terrier is also very affectionate and will be happy just hanging around with his family.