Oh, poor Nebo Change of diet can often trigger tummy upsets. Is it very hot where you are? Sometimes heat and a little dehydration can be the culprit as well. With my girls, it's usually "something they ate!" They get into everything, and possibly Nebo did too. If they didn't ask, bring a poop sample. That can be checked for blood (sometimes not visible) parasites, worms, etc. Have you seen any worms (yuck!) in his poop? In the meantime, try and keep him hydated and feed him plain cooked hamburger drained of fat or poached chicken, both with some plain rice. Worms could definitely be a possibility. I do not know much about the signs and symptoms of parvo. I post a link if someone doesn't chime in first. Hugs and kisses to Nebo. And please keep us updated and let us know how the vet visit went! Sandra