With both my dogs, I can easily feel ribs and my females coat being thick like a saint but my males coat is still thick.
When I took Zero to a show the judge called him a bit pudgy and I was so offended, I almost cried...turned out he was right and I leaned him down real nice and now he looks fantastic.
He is a nice looking boy though...I always look for a tuck in the belly when they stand so you can see where the rib cage ends
I understand that they are giant dogs with lots of mass but dont mistake mass and bone for extra weight...