Hi. I am new here. I was googling info and found this site. My husband and I bought Murphy when he was 12 weeks old. He is our only "child"' he was fine for his first 2 years, then he started becoming aggressive towards visitors in our home. He has bitten my grown sons a few times, as well as a couple friends. I figured he was jealous of my son's. We signed him up for obedience classes, he is perfect in every way, other then biting. Then about a month ago he has attacked me for no reason out of the blue four times. Murphy has been given the best of everything, totally loved and spoiled. I was scared to even touch him. We took him to vet last week, to have a physical. All good, the vet started him on prozac, after 4 days, he hasn't been aggressive with me. I just don't understand, he has never been mistreated in any way.