Labrador Retriever Dog The Labrador Retriever has been the most popular dog for the last 10 years, according to the AKC (American Kennel Club).

Lagotto Romagnolo Dog Originating in Italy, the Lagotto Romagnolo was used as a water retriever and hunter. This breed is believed to be the foundation from which all water dogs have descended.

Lakeland Terrier Dog The Lakeland Terrier is a quintessential terrier: strong-headed, energetic, and inquisitive. Given lots of exercize, they will settle down nicely in the home.

Lancashire Heeler Dog Originating during the 1960s, the Lancashire Heeler was developed as a herder and driver of cattle and sheep. They are the smallest of the English herding dogs and were also adept at hunting and catching both rabbits and rats.

Leonberger Dog Originating in Leonberg, Germany in 1846, this versatile breed was a favorite with royalty. The Leonberger nearly became extinct at the end of World War I but was revived and restored by several German breeders that were devoted to the breed.

Lhasa Apso Dog The Lhasa Apso is a self-sufficient and seemingly stubborn breed. With a moderate amount of exercize, though, these dogs can be a delightful family dog.

Lhasapoo Dog The Lhasapoo is created by the crossing of two breeds: Lhasa Apso and Poodle. They are commonly referred to as "designer dogs" and have become popular companions.

Lowchen Dog The Lowchen is both fun and energetic, as well as low-key and loving. They make great family pets.