I haven't ever been angry at a pup, but Grim has frustrated my wife on many occasions. Mostly, I think, because she never did try to bond with him...so he ignores her for the most part.
I had one of those "OMG, really?!?!?" moments several times with Grim. He's my 4th (actually 5th) GSD, BUT... he's nothing like the others. He throws out adult behaviors, he's WAAAY high drive and high energy!
I've never been able to cuddle with him, hold him, etc. He allows some pets NOW, but the first couple of months if your hand was near him, he was going to bite it. My arms and legs are covered with scars. For all the advice here on 'landshark' periods, NONE of the advice worked for my guy. Only one thing worked, and it's not anything I'd advise an 'average GSD owner' to do. Yes, I requested a drivey boy to do some serious work. I got exactly that. Some of the things that my breeder told me I expected to see later... not at a young age. Totally threw me off guard. He wasn't housebroken (fully) until a few weeks ago. I don't know why, we did everything we were supposed to do. He's just now allowed some house privileges without having to be constantly watched. It's almost like I got a different breed, LOL!
His saving grace is that he's my heart dog. This has kept me from ever wanting to ring his little neck or return him to the breeder. So even if you've raised plenty of GSDs in the past, you can still find yourself in uncharted waters. Like Kyleigh said... you get a high drive pup and you can find yourself overwhelmed very quickly!