As I understood it the challenge was to push boundaries and to aim for a more cutting edge image. This is pretty tame stuff, though a very good photo that might do well in a Free Study challenge.
5 - Personal preference, I prefer not to look at a tragically sad looking, obvious zoo animal as art (hard to find the right words here), despite that - the feel and capture does first say to me 'zoo shot' - which it shouldn't, unless this was your intent (apologies in advance if so). Having said that, I too have taken zoo shots and tried to 'artify' them... Maybe it makes a difference if you can't obviously tell they're in a cage - unless, as intonated above, that is your intent.
This is one of the shots I saw and thought it was pretty but wasn't really fine art so I voted a bit low. Now after coming back to it I think what you did with the light and the black background adds a nice artsy feel to it so I am bumping the score up some.
Beautiful light and detail and nothing to detract from the subject. Nice sort of diagonal going from teh head to the tail. I will admit to a bias towards animal shots so I'm predisposed to like this ;-)
Surely this is a zoo picture. And surely you had to adjust levels to get that featureless black. I don't think it's fine art, personally, though some may like this picture of an animal. It doesn't connect with me, unfortunately. It is simply evocative of the zoo, or predatory felines, and has nothing else to say to me. Does it mean anything to you? Technically, the tones are very rich, the contrast well done, the black and white superb. I don't buy that rich black.. that was not in the original, I think. I believe your focus is somewhere mid-animal, and should properly be on the eyes, but that may be an illusion of the light.