Hey! 22 week old GSD owner here. I know puppy zoomies are normal (and really fun to watch) but are they normally accompanied by crazy growling and snarling? It's almost demonic if you get a chance to listen to him, like the kind of snarling you'd hear from an aggressive dog. He's not at all aggressive and I know he's just playing (albeit a little roughly, we're working on it ;P) but does anyone else have this kind of behavior occurring in their pups?