The bulldog originated centuries ago in England, where it was employed to guard property, drive cattle, and participate in savage blood sports.
In a litter of purebred rat terriers, a hairless female puppy named Josephine was born. This gave rise to the American hairless terrier.
It is believed that the Alaskan malamute descended from wolf-dogs thousands of years ago.
In spite of its name, the American Eskimo dog was formed by German immigrants who brought their German spitz dogs to the United States in the early 1800s.
The Australian shepherd was developed in the United States, not in Australia, despite its misleading name.
A Bostonian purchased a dog named Judge, who was a mix between a bulldog and the extinct white English terrier.
The Boykin spaniel was developed in South Carolina around the turn of the twentieth century by breeders desiring a relatively tiny dog for hunting turkeys from boats.
The Chesapeake Bay retriever was developed in the region surrounding the Chesapeake Bay, an estuary spanning Maryland and Virginia.
The Catahoula leopard dog derives its name from its region of origin, Catahoula Parish, Louisiana, where it was bred as a versatile farm and hunting dog in the South.
In the 1930s, the toy fox terrier was produced in the United States by crossing smooth fox terriers with miniature pinschers and Italian greyhounds.