My husband dropped off Rumo for boarding once and when we got him back, for the entire week after boarding, he never lifted his paw to ask for a tummy/chest rub from my husband. My husband was so disturbed that now he always makes ME drop off Rumo for boarding, LOL.
I think some dogs do seem to hold a bit of a grudge!
The very first time after we picked him up from boarding, Rumo was nuts - whining, howling, groaning, jumping all over...apparently he thought we had given him up and he was back at the "Shelter". But ever since that first time, he has figured out that we do come back - so he runs out happily and heads for the car. ( He could probably win a medal in an agility trial for how fast he makes it to the car and leaps into the backseat! That, to me, is a sign that he's happy to go home!)
Rumo ~ rescue shepherd/husky mix