One of the first things I do when my dog has problems defecating is to give them frozen organic pumpkin. They love them as a treat and they can't just gulp it down. If diarrhea doesn't start clearing up within 24 hours, have a look at the natural antibiotic I give my pups every day. As always, schedule an appointment with your vet in case your companion has something bigger going on. If the pumpkin works, you can always cancel your appointment.