Definitely go check out the photography work of Nick Brandt. His photographs of African wildlife are some of the most striking photos I think I’ve even seen. Absolutely beautiful stuff. A lot of the photos on the site are available in his 2005 book, On This Earth: Photographs from East Africa. Prints are available for ordering, but I’d be scared to even inquire on the price.
While you’re in the animal photography viewing mood, I’d also recommend the photography of Andrew Zuckerman. His newest book Creature, has just been released and it’s equally amazing. This series of photos consists of animals on a stark white background. The results are amazing. The photo of the lion doesn’t even look real, but looking at it closely you can see the texture of the lion’s fur. You can see more examples of his work at CreatureBook.com.