I'd guess the pup to be mixed also......I've had a couple GSDs whose tails would curl more or less depending on how agitated/excited they were at a particular time....but.the way the ears set and the muzzle also doesn't look right IMO.....either way a really cute pup
Looks pretty GSD to me. I've got one with a tail that looks like the handle on a tea pot.... I didn't catch how old this pup is. I find it hard to judge from a picture, too, so maybe I'm all wet. It wouldn't be the first time.