This is sort of an extension of my previous post...Cyrus was on an antibiotic medicine for ear infection, and during that time, would puke up his food every now and again. The infection is gone, he is keeping the food down, and the med has been stopped, but now I seem to be running into a different problem, and I am not sure if it has anyting to do with the med at all.
He has been having runny stools for the past two days. I would not call it diarrhea, but his stools are an absolute
mess. We have had him on the same food for almost one year now, and never had this problems; his poop was always good-sized and solid.
Cyrus is eating, drinking, and playing normally, so I am not sure whether to phone up the vet or not. It couldn't be parasites, I don't think? He is on preventatives, and aside from the antibiotics, I can't for the life of me think of anything else that could be causing this. We are very diligent when we take him on walks, to make sure he doesn't pick anything strange up, and it is easy to call him away from 'odd' items when he is taken to the off-leash area.
If anyone has any speculations...I would be very grateful for them.

Thanks a lot in advance!