We have had bassets that did this and our vet told us to give Dis-Taste supplement which is available through Drs. foster & Smith. The description says it makes stools "unpalatable" LOL you would think that was the case all the time. We used to have one that would actually run over to the other to get a nice steaming mouthful. After giving each a tablet daily they quit doing it so I guess it actually works.