There is also the David Sheldrick Wildlife Trust[3][4] which takes care of elephant and rhino orphans (most of them are orphans due to poaching). For $50 a year, you can become a sponsor of a particular animal and they'll send you photos and updates about how your sponsored animal is doing. You can for example sponsor this little fella [5][6].
[1] http://en.wikipedia.org/wiki/International_Anti-Poaching_Fou...
[2] http://en.wikipedia.org/wiki/Damien_Mander
[3] http://www.sheldrickwildlifetrust.org
[4] http://en.wikipedia.org/wiki/David_Sheldrick_Wildlife_Trust
[5] http://www.sheldrickwildlifetrust.org/asp/orphan_profile.asp...