I found this interesting interview with Mr. Ivanovic on Miss Rosen blog
http://missrosen.wordpress.com/2010/06/07/boza-ivanovic-the-once-and-future-king...

Very interesting forum
I also find one of the photo magazines with this project and it does not say how he manage to make this photos- But it does say that he travel to 8 countries to get the shots some in eastern and western europe,I think in Canada and Mexico too, also says that he visited 17 zoos so far
So I wonder if Flossie is right than why did Mr.Ivanovich travel and used so much time and money
Could he just do this in local zoo and then finish everything in computer like it was suggested here?
I just think that there is more here than just simple pp in photoshop

Sonja