Few photographers have ever considered the photography of wild animals, as distinctly opposed to the genre of Wildlife Photography, as an art form. The emphasis has generally been on capturing the drama of wild animals IN ACTION, on capturing that dramatic single moment, as opposed to simply animals in the state of being.
His images wouldn't be found in National Geographic however they are remarkable as fine art images. The way he shoots he effectively isolates his subject and draws you into the scene. The animals themselves are depicted as noble creatures rather than savage beasts.
You can check out more of Nick's work on his website (http://www.nickbrandt.com)