dog has diarrhea

Question
my dog has been very regular about going to the bathroom, but for the last few days he has diarrhea.  he doesnt seem to be acting sick in any other way.  very playfull and still eats well.  what do you  think it could be?/

Answer
Diarrhea accompanied by lethargy could be parvo, cause for panic and immediate medical attention weekend or not.

As long as he is his usual energetic self, I would let it go over the weekend.  If it doesn't clear up by the first of the week, call the vet.  Dogs frequently manage to find something to eat that upset their digestion for a day or 2.  A bland diet might help settle his bowels down sooner.  

Bland recovery diet for dogs.

3 parts cooked rice, one part boiled hamburger or chicken, or cottage cheese. I think you can substitute boiled potatoes for the rice.  Once in an emergency, we bought a plain baked potato from Wendy's.  

This is meant for short time settling a dog's digestive tract.  It is not the complete and balanced they need long term.