Baron was neutered on Tuesday last week. He came out of the Anesthesia within 15 mins. of surgery. The Vet said he could get diarrhea from the Anesthesia But, He didn't. She said to feed him boiled white rice with our without boiled chicken in it or even canned pumpkin to firm up his loose stools. We wee in a Hotel in Arkansas and would've had to microwave everything, But, He did great. The only problem is that he won't let the incision alone and has to wear an E-Collar. He also had a small growth on 1 tesicle so he has 14 days of antibiotics to take and we finished the pain meds today. He's doing really well, even after all of my worrying...I would call your Vet and have him looked at. I had Baron's stool checked too to make sure he didn't have worms. Hope this helps and let us know how he is...