Great topic!
Just like Wolflady, I would ask my Elvis what happened to him before I adopted him. I would really like to know for sure how his little leg got broken. If it was abuse, I'd ask him for the name of the person and report him/her.

I would ask Danny why he needs to be in everything and knock everything over. (dumb question...he's a CAT, what do I expect?)

I would ask both of my kitties and my turtle whether they are happy with me, because I'm sure happy that I have them.