O.K. I have a puppy that will be 1 year old this month. He has always been very timid. We got another puppy that is about 6 months old and she is in no way timid! They play fight all the time and sometimes Hershey (1 year old) will get mad and growl and play rougher than normal, but it doesn't seem to bother Jazz since she is bigger and comes back at him. I didn't worry about that too much, but now I have noticed he is starting to show aggression toward my son.
We will be laying on the couch and if my son gets in Hershey's space, he will growl at him... today he actually went for him with a really bad growl... He acts like he is going to bite him. My son is 12 years old and does not tease or do anything to him to provoke him...it just started happening. When he does this I say "no" and have my son say "no!"...what should I do. I am afraid that if he ever bites, I will have to worry with other kids as well.
It's gotta be the schnauzer in him that's causing the aggression - definitely can't be the poodle! Just kidding!
Now, seriously, you are right - this is an attitude that you want to stop quickly as generally it will continue to escalate.
Have you done obed. training with Hershey? How far along is he with it? One thing that might help is if you have your son actually do training sessions with him. He is at a good age - the obed. school we go to actually has a class with kids working the dogs. It is amazing how well they do. They have even competed in obed. competitions & placed.
Is it only your son he reacts like this with? If yes, I think him working him on a regular basis will really help. If it is with others as well, you might seriously want to consider checking with an actual dog behaviorist to find the best way to turn this behavior around.
In reading back over your post, does it only happen when Hershey is on the couch with you & your son joins in? If yes, I'd suggest that Hershey lose his couch privileges at least for a while until his good disposition with your son returns.
Is Hershey neutered? Is your new pup spayed? If no to either, having it done might help as well.
Hershey is showing his alpha status with the pup & I think he has gotten confused as to exactly who that is allowed on. You might also want to have your son do the feeding for a while as well. Hershey is getting to the age where he's going to start testing the waters but I think once he realizes he's not going to get away with it he'll be fine.
He is not in obedience... I know he should be! He doesn't show anyone else this aggression...it only happens when we are on the cough watching tv or if my son comes and gets in bed with my husband and I and he gets too close to Hershey. Since he is the only person that comes and gets on the couch or in bed with us (:) lol, I don't know if he would be like that to anyone else or not... My guess is that he would. But he does not do it to my husband. Your suggestions sound good. I can't see my son having the time to do obedience with him, but I can make him work with him as far as sit, lay and have him walk with him on a leash... do you think that would help? Hershey does those things for me, but normally my son doesn't do any of that.
Also, Hershey is neutered. Jazz is scheduled to be spayed on the 15th of this month.. . what is funny is we never had problems with Hershey "humping" before neutering him, but now he is constantly trying to hump Jazz. I have heard this is a dominance thing as well.
"It's gotta be the schnauzer in him that's causing the aggression - definitely can't be the poodle! Just kidding!" THAT'S FUNNY!
I think it would be great if your son could do even one 15-20 minute obed. session with him each nite. Then on the weekends he could possibly put in an extra 1 or 2 sessions during the day. Giving it a try certainly can't hurt. Hopefully this is all it will take for Hershey to learn that your son is higher up the ladder than he is and he learns where his place is. It sounds to be as tho Hershey just doesn't want to share you with your son. And he probably realizes there is no way he'd get away with it with your hubby.
If he does a repeat of growling at your son I'd tell him no & put him in a time-out. This will also help teach him that inappropriate behavior loses him the companionship of his humans which is what he wants. While he's in his time-out completely ignore him, even if you have to put him in another room. Then after a few minutes release him and act as tho nothing is wrong. If he repeats the behavior, right back into time-out he goes.
The humping can be just a "male" thing or it can, in some cases, be a dominance issue. Now that he's got a furgal all of his own it's just more convenient. In fact, you may not see this stop even after Jazz is spayed. Farley was neutered at 6 mos, then 1 yr later we got Chloe & had her spayed at 6 mos. They are now 6 yo & 4 yo and to this day on occasion Farley will still try although Chloe doesn't let him get away with it!
Thanks for all of the information. I think you are right about Hershey... He knows if he goes after Jazz, she will come right back at him...but she knows my son will not. In fact, it hurts his feelings...lol.. we will work on that and I will let you know how it goes. Thanks a bunch!
I agree with Denise....Hershey needs to know that your son is higher ranking in the family. Have him work with Hershey and show him, he is boss. Otherwise you'll be headed for trouble.
Just kidding!
Just kidding!" THAT'S FUNNY! 
