nti Wara Yassi - http://www.intiwarayassi.org
The wildlife refuge is located in Villa Tunari, Bolivia. It is operated by the help of volunteers from all over the world and focuses in wild animals (such as monkeys and wild cats) but no other animal is ever turned away.

Matamata - http://www.tortoise.org/archives/matamata.html
Chelus fimbriatus, by William H. Espenshade III, an article about these turtles. They occur in northern South America, including both the Orinoco River and Amazon River basins.

Matamata Turtle's - http://www.unc.edu/~dtkirkpa/stuff/mata.html
Chelus fimbriatus biology and captive requirements, by David T. Kirkpatrick.

Scientific Expeditions to Patagonia Organized by University of Connecticut - http://www.canr.uconn.edu/paine/
Groundbreaking ecological research at Torres del Paine National Park, Magallanes, Chile. Details about past and future expeditions.

Where to Watch Birds - http://birding.miningco.com/msubmenu10.htm?pid=2804&cob=home
Information and resources about birding places throughout South America.

Wildlife - http://gosouthamerica.about.com/msubwild.htm?pid=2745&cob=home
Links to websites about wildlife in South America, from About.com