Below you'll found differente gamedogs that are big part of making the apbt the dog it is today.
For example picture just below
pic #1 Ch. CRENSHAW GARRET'S JEEP
CONDITIONED WEIGHT: 42-43
One of the greatest producers of all time. Jeep defeated Pylant’s Ch. Kato at 43 pounds in :28, Cooper’s Weenie at 43 pounds in :58, Stinson & Stepp’s Black Dog at 42 pounds in 2:05, and O.Stevens’ Ch. Homer, at 43 pounds in 3:45. Jeep died in the fall of 1989
pic #2 Ch. HONEYBUNCH ROM
One of the greatest producer of modern time