When our setter Zoe was young she suddenly had really bad diarreah. Some one suggested giving her goats milk youghurt in her food.Just a spoonful a day and within 24 hours the diareah had cleared up. Natural youghurt does the same but the goats milk yoghurt is better. My lot all love it. I have yoghurts for work but don't like the black cherry ones. Fortunately William the greyhound loves the black cherry ones. He gets them miexed in with his breakfast when ever there is any in the fridge. He takes for ever to eat his ood but gobbles it down when it has black cherry yoghurt in it.