The only thing that comes to mind with SteveO's idea would be to take that avatar idea. But instead of having that big heart in the picture perhaps have a deer standing broad side with the sight pin centered on the vitals and you can see the heart of the deer almost like if you had x-ray vision. I know, that is a big much to put on a small avatar. But that's what came to mind!
I love that idea,wonder if it will work