For an x-ray they can give a quickly reversible sedative and if he is good he may not even need one. Most dogs do for perfect OFA x-rays but for a look for problems, no so much. Have you spoke with the breeder about your concerns? IT does not sound normal.
NAPWDA Certified Cadaver Dog
Waiting at the Bridge (italics
=GSDs) (hemangiosarcoma=blue):Grim , Cyra, Toby
, Rainbow, Linus, Oscar
, Arlo & Waggles