Both my dogs were haelthy but were lactose intolerant. They were fed lots of milk for one month. There is a now a liver issue. One of my dogs has a bloated &tight stomach. The other dog has a slightly tight stomach with a little yellow in the eye AND ALSO a layer of greyish substance covered with a thin layer of mucuous over the stool passed. What is the greyish substance over the stool body. Why is there mucuous. Is the greyish substance the rotting lactobacillus in the intestine? How does it go away? How does it get back to normal? Is liver tonic the only respite? PLEASE HELP !