Lovely tiger shot - I'm guessing this has to be in a zoo - or else you have some super zoom lens to get that close! Can't fault the shot though, its fabulous and I like the b & w treatment.
Given the spirit of the challenge was to capture a shot of wildlife in its natural environment, I find it most difficult to believe that this was done with your entry. Especially given the rarity of this particular animal. Needless to say my vote on this was very low given those circumstances. When a photo does not do its best in composition to depict actual challenge guidelines, my stadegy for voting immediately stops and it becomes a DNMC to me.
Very nice as black & white. I would've preferred a little less zooming so his ears weren't cut off and maybe recomposed so he's looking to the center of the shot (as it is, he keeps leading me out because I wonder what he's looking at).