Sadly Antonio never lived to see his dream become reality. He was killed by a man who intended to rob him during a boar hunt in 1956. Agustin then took over the dream, working on the new breed, bringing it back from near devastation and moving the headquarters for the breed from Cordoba to Esquel, located in Patagonia in southern Argentina. Agustin Nores Martinez was the Argentine Ambassador to Canada and he used this opportunity of travel to spread Dogos throughout the world. Big game hunters in Argentina and it's neighboring countries were using the Dogo on boar and puma. The Dogo Argentino was fast becoming a legend.

The Dogo Argentino is an endurance hound much like his Irish Wolfhound ancestor. He is expected to track the wild boar across vast pampas, corner the animal and attack and hold it for the hunters. He is capable of dazzling bursts of speed for short distances, but his forte is covering long distances at a gallop (hence the arched loins to give impetus at the gallop). Having cornered the boar, he must have enough strength in reserve to attack and hold a wild boar weighing up to 400 pounds. In a traditional boar hunt the hunter will jump on the boar and kill it with a knife thrust to the heart while the Dogos are locked on with a death grip.

In A Brief History of the Argentinean Bulldog, by Agustin Nores Martinez, as translated from the original Argentine:

"I feel as a conscience imperative to make absolutely clear, which is the bulldog's background, the breeds that took part, what is what we intended to do, and which are the requirements or conditions that a bulldog must meet to be a typical example of the breed. This present extension, is a ratification of what was written in my first book.