About a week ago while traveling I stopped at a Rest Area, a man & women were there letting their Lab do it's business. As I was walking back to my car I commented on what a good looking pup they had. ( It looked to be maybe 5 to 6 months old) They woman told me thanks & all that but that the dog was actually 2 years old. I didn't what to question if it was full blooded or not. My question is, is there a breed of Lab that is smaller than normal ?