My black Lab has had diahrea for about a month that I know of. We have had him for that amount of time. He is four months old,I have been giving him just dog food.He gets 1/2 can a day and dry w/ it then two dry dog food servings.I don't know if he's been wormed but I have checked his poop for worms and have not found any. What other cause could there be for this?
Your pet may have parasites b/c you do not always see the worms in the stool. It may also be coccidiosis or giardia. It could also be a food sensitivity. I recommend that you bring your pet to the vet for a check up and bring a stool sample. Good luck, vetcare