As Tigresa grew, she turned out to be a very pleasant and promising individual: she was extremely affectionate, obedient, quick-to-learn, physically balanced, strong, and vigorous.
At the same time she was an excellent guard and very tolerant towards Pedro's Bull Terriers: when they tried to provoke her, she rather eluded the attacks by her better physical agility and balance than by using aggression.
After noticing the great qualities of Tigresa, Pedro started to gather information from other people who had purchased a puppy from the same litter.
The response was that the dogs had become physically vigorous and excellent guards, at the same time being gentle and affectionate towards their families.
Therefore, he crossed several Bull Boxers with the American Staffordshire Terrier and noticed that at least in the first generation, the characteristics remained the same.
However, no more American Staffordshire Terrier crosses were made in the following generations and soon the studbook was closed to continue the breeding solely by using already existing Bull Boxers.
The Dogue Brasileiro is a medium-sized, strong, agile and muscular dog, being massive without creating heavy or stocky impression.
[1] The Dogue Brasileiro is an active and balanced, yet alert, fearless, and watchful dog with a strong guarding instinct.