Thank you for the fast response, He certainly tries to anything that interests him on walks, so a foreign object has been one of my concerns. However, since I upgraded his dog food a few months ago, I noticed that his somewhat loose stools became firmer. Actually a little too firm it seems, as he first movement of the day has occasionally been "folded" over and a little difficult to pass. This doesn't happen everyday, and I've also been giving him fish oil capsules lately for his skin, so I"m hoping the oil might help smooth things out?
He seems happy and healthy otherwise, but if this persists, is a vet appointment an urgent concern?