THERE IS NO DOUBT THAT THE PIT BULLDOG IS THE ORIGINAL. THIS BREED WAS USED TO CREATE SO MANY OTHER BREEDS. THEY CAN'T GET WHAT THE PIT BULLDOG HAS TO OFFER. FROM ANY OTHER BREED OUT THERE. GAMENESS, DETERMINATION, COURAGE AND ETC...

THERE MAY BE SOME TERRIER BUT I SEE ALOT OF HOUND AS WELL. I GUESS BACK IN THE DAY THEY HAD TO USE WHAT WORKED NO MATTER BREED OR PEDIGREE.