He was 5 and a magnificent specimen....115 pounds and all muscle and totally fearless but he had a very protective mean streak that just got worse..Vet agressive at 2, attacked dogs at random, jumped off the dock to shoo away pesky dolphins , caught and killed numerous raccoons, cats, skunks, possums, beavers , water moccasins and other critters , nipped a game warden last year that picked up one of HIS ducks from HIS boat, obidence school dropout as too agressive for the other dogs and neutering did nothing . Sometimes he would listen to me but no one else in the family could handle him..IF I ever end up by myself and move to montana on a ranch I would get another one as I love the breed but for now we are going back to Labs which we have never had an issue with...I did what I had to do but its still eating away at me ...If I had given him away I would of always worried about him mauling a child and chessies do not do well with new families because they bond for life and become more agressive when seperated from their original family...I'll get over it but it wont be easy...Frank