Animal Reserves:

• Communidad Inti Wara Yassi - www.intiwarayassi.org - This Bolivian reserve is an amazing place, with a nice website.
• Merazonia - www.merazonia.org - A cool new animal reserve in Mera, Ecuador.

Animal Groups:

• Andean Bear Conservation Project - www.andeanbear.org - This organization is dedicated to research and care of the endangered Andean Spectacled Bear.

Sustainability:

• Earth Renaissance - www.earthrenaissance.org

Volunteering:

• Earth Renaissance Volunterers www.earthrenaissance.org/seeking_volunteers.html
• Communidad Inti Wara Yassi Volunteers www.intiwarayassi.org (then click on volunteers)
• Merazonia Volunteers - http://www.merazonia.org/drupal/?q=volunteer