[Willy]

I adopted a 1 yr old unneutered male on 4/28. he has never been to a vet or been housebroken. My first stop when vet opened Monday was starting his shots and getting a physical. He is in great shape and has behaved well UNTIL today. I also have a almost 8 yr old Golden retriever and a 3 yr old Golden mix both of these I have had since they were puppies. and have had no problems now the yorkie "willy" has started attacking them and biting the mix very hard enough to draw a few drops of blood. I want to have him neutered but can't until his 3rd distemper which will be a month and a half from now. Will this make him calm down and stop fighting? and how do I break up the fights now the 8 yr old weighs 100# and the 3 yr old weighs 65 I am afraid someone will get hurt!! The other dogs are neutered/spayed. When they fight now I tell Willy no!! and flip him over on his back in a submissive position. Does anyone have any help they can give me this is very stressful, I have 2 children 10 and 12 and he has growled at them also.