Actually a mix of breeds formed this breed ..terrier is in there though
Breed Standardheres a website with some photos :
photosFrom wiki :
History
The feist is not a new type of dog. Written accounts of the dogs go back centuries, with several spelling variations seen. Abraham Lincoln wrote about them in a poem, "The Bear Hunt," spelling "feist" as "fice." Reference to them is included in the diary of George Washington in 1770 in which he wrote, "A small foist looking yellow cur," and a feist is also featured in William Faulkner's "Go Down Moses" in the line "a brave fyce dog is killed by a bear." In her 1938 novel The Yearling, author Marjorie Kinnan Rawlings uses the spelling of "feice" to refer to this dog. Claude Shumate, who wrote about the feist for "Full Cry" magazine, believed that the feist was descended from Native American dogs, mixed with small terriers from Britain, and was kept as early as the 1600s. (Full Cry, December, 1987).