Language Acquisition in Animals 
Chimpanzee and Human Communication Institute  — Visit Central Washington University's Chimpanzee and Human Communication Institute (CHCI), and learn more about Washoe, her "adopted son" Loulis, and three other chimps (Dar, Moja and Tatu) that have learned to use American Sign Language to communicate with humans.  You might even want to consider applying for the 10-week Summer Apprenticeship Program. 

The Gorilla Foundation — The Gorilla Language Project, or Project Koko, is the longest continuous interspecies communication project of its kind in the world.  Koko (the most famous of the trio), Michael, and Ndume are three Western Lowland gorillas involved in this study of language acquisition.