Okay so before I found this website I spent numerous hours watching videos of GSD puppies, grow videos, training videos etc. Then I spent even more hours researching Pituitary Dwarfism then again looking at those dogs in videos. Then looking for ways to determine age and then I frankly landed here where other owners had similar concerns. So I got my GSD puppy on 03/05/2021, his birthdate supposedly is 01/15/2021. I say supposedly because I want to believe that he is really about 5-6 weeks old which would not be a good thing either but would give me a piece of mind due to his size. So long story short when I got him he was exactly 7 weeks old according to the birthdate I was provided with. I had him weighed that same day and he came in a a whopping 4.5 pounds! Which to my understanding is not an ideal weight at all not even for a female pup. My fella is a guy, a really small one at that. I feel that he is younger because of the way he acts, how he cries. How he runs with a little bounce and the way he looks obviously but I can’t find a reason as to why the breeder would be lying to me. I don’t think it was a rush to sell them that doesn’t make sense to me since they would still sell. I also counted his teeth but somehow I counted 25 I might’ve counted wrong though. So I have provided some pictures. The breeder told me to give him goat milk if I could get a hold of some. He also mentioned that the mom was not caring for the puppies properly. Whatever that means, he didn’t elaborate and the scary thing is that his other siblings are the same or even smaller. I was super excited to finally get a GSD and now I just feel disappointed. I wanted to take him back but I felt bad and the breeder said he would take responsibility if it turns out to be a genetic defect. Any input would help. I’ll provide some pictures.