Occasionally Allen has bloody stool from being sore from diahhreah (sp?) and it goes away after one or two days. Allen gets the problem from sneaking food he's not allowed to eat - like milk from my ceral bowl or something else you might have leftover on a plate.

Has MAx has runny poo lately? If its worms, then Meka most likely will have them too since they are transferred in the litterboxes.