Yes, green tripe is excellent for dogs. I feed both and feel they both give benefits. I am not sure the benefits overlap and are the same as I think the tripe has other stuff in it. And it can be hard to find "fresh" green tripe. I buy the frozen green tripe from the Blue Ridge Beef company and feed about a half pound once a month. I'll look up more on green tripe later when I have more time...

My feeling is that both yogurt and green tripe are healthful things to feed dogs and so I use both. The oils, salmon oil and coconut oil, are also very important for good health.

What else have you found in your research?