Sounds like you could very well have a possible long coat. there is a DNA test you can do to verify this. If your puppy is a long coat both parents are carriers of the long coat gene. I had a fluffy puppy who everyone was confused at what he was. I showed him he has 2 majors and a total of 9 points. He is now after having the DNA test and verified an affected is neutered and living very happily with a great family with his own entertainment chair in the living room.
Canine Coat Length Test for German Shepherd Dogs, Rottweiler, and Cardigan Welsh Corgis
This link is for the DNA test information