Pat Hinckley, IL 5/6/2010 5:41:16 PM I live on 5 acres with 2 horses and a 7 yr. old rott. (And, of course, love DOGS) She is not in good health and we are seriously considering a mastiff when she dies. I felt your article was informative, if not a little "warning" off of the breed. Many people enter into dog ownership uneducated, which accounts for many of the pound dogs and adopted breed agencies. On a personal note, my last 2 dogs.