Look at his gums. Are they pale? Only you know the relative amount of tiredness. I know we are having a heat wave right now but he is getting to the age where stuff starts going wrong. Hemangiosarcoma is, of course, one of the concerns and pale gums would give you insight into that.
NAPWDA Certified Cadaver Dog
Waiting at the Bridge (italics
=GSDs) (hemangiosarcoma=blue):Grim , Cyra, Toby
, Rainbow, Linus, Oscar
, Arlo & Waggles