When I opened the thread, the first impression was rather a visualization of this picture in a b/w print. Your frame made a potentially stark contrast come out.
That said, I do think, for the purpose of a nature shot, the color version in #1 serves you right except the mentioned edge problem. You fixed that in #2, but the saturation of the colors there went a tad mad.
I think the darkness takes away from it a little bit. I think it would be more compelling with a light blurred background, but very well composed this is cool!
I had a similar photo of a cow, unfortunately I was using old fujichrome so it turned out crappy
edit: whoops, exactly like mike did, exactly what I was thinking