I've always thought bully-type dogs are like shepherds, terriers and retrievers, etc. - their basic breed instincts, fixed action patterns and behaviors that have been genetically programmed and reinforced by generations of selective breeding, are very present factors in dog behavior but that recent breeding tendencies and nurture/environment probably play just as big a role in how each dog, whatever his breed type, lives his life.
__________________  Jeanie and Tibbe One must do the best one can. You may get some marks for a very imperfect answer: you will certainly get none for leaving the question alone. C. S. Lewis |