i have a 7 month old amstaff trained at dog school.She is a purebred and very muscular for her age.My query she has grown up with 2 other neighbours dogs which are mongrels and a lot smaller than her,but everytime i let her out side the older male dog quite often comes up to her and bites her but before he gets there she cowers away then squeals.I thought being an Amstaff i would have had to pull HER away.I dont want her to be an agressive dog but will she ever defend herself or has she been mistreated before we recieved her as a puppy.I would be gratefull of anybodys input in how to reverse this situation as i bought her for protection for my wife when i go to work.

