my pup onyx had diarhea majority of the time ive had him. ive changed his food multiple times brought him to the vet got meds, and still no help. i finally switched to blue buffalo and started adding pumpkin and his stool is wayyy better. But now the problem is in the morning his stool will be perfect.(after laying in the kennel all night) but then throughout the day `it will be half hard half soft. Anyone know why. What can i do to change this?