10 extinct breeds of dogs (With Pictures)

9. Blue Paul Terrier

This extinct dog breed gets its name because of the bluish tinge it had on its coat, and from the sailor John Paul Jones who is believed to have brought it to Scotland. It had a muscular and powerful build, and was a strong and ruthless fighting dog. In the mid-1800s, these dogs participated regularly in the erstwhile sport of dog fighting. They started disappearing by around 1850-1900, and is believed to have evolved into American Pit Bull Terrier and Staffordshire Bull Terrier.