Max Planck Institute, Department of Primatology:
http://www.eva.mpg.de/primat/

Wild Chimpanzee Foundation:
http://www.wildchimps.org 

Max Planck Institute for Evolutionary Anthropology, Department of Developmental and Comparative Psychology:
http://www.eva.mpg.de/psycho/dog-cognition.php

CLUB P.A.N.:
http://clubpan.blogspot.com/

Orang-Utans in Not e.V.: 
http://www.orang-utans-in-not.org/

Bonobo Alive: 
http://www.bonobo-alive.org/files/german/index.html

Ngogo Chimpanzee Project: 
http://ngogochimpanzeeproject.org/

Yves Rocher Fondation: 
http://www.yves-rocher-fondation.org

Alexander von Humboldt Gymnasium Werdau:
http://www.gymnasium-werdau.de/projekte/elfenbeinkueste/index.htm/

Johannes-Kepler-Gymnasium Leipzig:
http://www.l.shuttle.de/l/kepler-gym/unesco/index.htm