A friend of mine gave Jules one of those edible Nylabones awhile ago. I think it was the spearmint one & his poop was all funky. Really loose & just not normal for him. He's never gotten another one of those bones since. They're like $8 & he devours them in minutes.
Like RW said, Jules is just as thrilled, if not more, with a raw, marrow bone.
Brooke