We brought home an adorable 8wk Old GSD Puppy on Saturday. She seems to be acclimating okay, but I do have some concerns. We have an 8yr old Shep/Lab mix and they are getting along mostly, but randomly the puppy with growl, snark and bite at our older dog. And she is pretty protective of her food. It doesn’t seem like she is playing when she does this, it’s not the puppy growls during tug of war. Should we be concerned for the future, will she grow out of it. And is there any ideas to break her of the habit before it becomes more solidified? Thanks!