RonT: How long has this been going on? This is the most important question. More then 2 days then she/he needs to see a vet.. You did not mention age and you didn't mention diet. Do you give treats? There are some horrible treats going around, bad stuff. I have been a dog person for years and am always watchful for changes in bowel movements. Dogs are resilient but they are susceptible to some stomach/intestinal problems. Keep the diet fairly even, don't change it up a lot. I disagree with the rice due to dehydration, it can dehydrate a dog even worse. Same with oat based products.
I will get on a bandwagon here for just a second. Most of the crap you buy at walmart (no capitols for effect) is horrible for your dog. You have a computer, if you love your pet, research dog food. Please. Feed your dog the same quality as what you eat. Just take 10 minutes and discover the crap you are feeding your best friend. We spend a little more but get quality food for them.
Karl
P.S. What got us to wondering was, we saw our dogs eating the horse/mule/donkey poop. Why? They weren't getting the proper diet. Just a thought for the future.