DDog is in discomfort, lots of stretching and moping around and reluctant to jump up onto sofa / beds. He is prone to colitis but usually he goes off food, gets gurgly guts and loose stools and eats grass.
This is different as he's eating and drinking normally and stools unaffected but he's clearly uncomfortable and a bit miserable. He usually hides pain (ex street dog) so I hope he isn't in agony but pretending he's ok. Still chasing squirrels, maybe not as vigorously as usual!
Going to vet tomorrow but has anyone ideas of what it might be?