Our 10 week-old-tomorrow little boy is a delight. This morning right after breakfast he began having liquid diarrhea. He has only eaten Nutrisource small/med breed kibble, 1/4 cup four times a day, except that in his outdoor play area and in his toileting area he eats grass, leaves, and sticks all the time. That's the only source of the diarrhea I can think of. He is quite large for his age. I think we're actually underfeeding him a bit perhaps, he's over 11 inches at 10 weeks. He has not been around any other dogs or animals. He had his first fenbendazole treatment at home yesterday morning, but that's a little more than 24 hours. He has been to the vet for his first checkup and was fine. What should we do about the diarrhea? And should we give him the second fenbendazole treatmet? Thank you in advance for any advice you can provide.We could probably move his potty area to concrete if you think it's the grass, etc., he's eating.