I'm concerned my GSD may not be purebred and is smaller then the avg GSD his age. He will be 8 months old in 2 weeks. He is about 22" from floor to shoulder and weighs about 52lbs, not to mention his ears have never stood up ( we took care not to mess with his ears as well as give him chew toys and bones to strengthen the ear muscles). I have attached pics. I was hoping to get some opinions on this?? He is a Czech working line breed.
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