Hello, i have a zuchon and he is 14 months old , recently he bit and drew blood from my Son aged 16 .He has never given him any reason to do this .At the time Jasper ( the dog ) was in the lounge behind the door asleep, when my son opened the door , jasper went for him all teeth and tried to really hurt my son.At this time i intervened and jasper didn't even know me , eventually after a couple of minutes he calmed down.Unfortunately my son is now scared of jasper and wants us to get rid of him.Any suggestions would help, but i think that my son disturbed Jasper's sleep which he has never liked !!