What sort of bedding you got the dog on?My russell pup had the shites like that took him to the vets as he had started limping from playing with other dogs,kept him in for an xray,leg was okay was told to feed him chicken,pasta for stomach,took him back next week for check up,still runny shite,vet said it might be the pain relief,wasnt happy as he hadnt had any till id took him for the leg,anyway he had a couple of shites with lumps in so i chopped it with shovel it was very fibrous he had been chewing his bedding,old blankets,so i changed it to shavings,after two or three days dog was shiting