I would also like to know what you think the pineapple is good for.
My dog won't touch most fruits .. sometimes he will take a tiny amount of pear or apple and a few goji berries, but on the whole, he prefers a few raw veggies like cabbage, broccoli and plenty of raw meaty bones.
I read that Dr schulzes superfood was good for dogs (on Dr S's forum) and I tried a little on him mixed with water and he seems to like that very much. I let him decide what he wants by offering a little now and again.