Didn't mean to seem that way. I was sincerely trying to guide you to the point, which is that the common descent hypothesis lets you reason unattested properties of animals for which you know something about ancestors and descendants. I don't feel any hostility to you at all. On the contrary, your attitude on these threads has proven exemplary.
Perhaps, from all the questions, you thought I had you in what I've come to call "tallhappy mode." An unfortunate precedent was set by the way that person used the quiz show as a bludgeon.