History
In the past, the English bulldog was used by foreign immigrants who moved to South America and brought their dogs with them. They weren’t considered “breeds” but were more of a generic bulldog and were originally used as guard dogs for farmlands, stock, etc.
The breed, however, became close to extinction after the second world war. Some breeders, John D. Johnson, and Alan Scott kept infusing several bulldogs together in the bid to breed the American Bulldog while monitoring its health and capabilities.
Today, the American bulldog is completely rid of the fear of being extinct and has become one of the most popular dog breeds in the country.