I thought this picture turned out rather amusing. It is Zen, my pied crow, investigating the rather shiny teeth of a coyote skull. I thought she might have a little fear of the skulls, since most critters I first introduce them to recognize them as animal-like, but no, not Zen. She wanted the shinies for her own.
There's a bunch more photos of Zen in my journal - http://crow24.livejournal.com/132700.html#cutid1