just a shout out from a new Berner owner, Truman is my 30lb 4mo old male. And I joined Bernertalk so I can get info from some of you more experienced Berner parents, Truman isn’t my first dog but is my first berner. My breeder is a wealth of info but so are you folks on this site. I have agreed to leave Truman unaltered so my breeder can use him for future breeding. He was pick of litter and only male so that was our agreement for me to take him home. If a medical or behavioral problem arises this agreement would be revoked. Can a male become more agressive if not altered I was lead to believe this breed is on the whole very sweet and submissive. Any feedback appreciated.