Dr Hare and bonobos sharing food
http://7thspace.com/headlines/335114/new_research_suggests_that_the_act_of_voluntarily_sharing_something_with_another_may_not_be_entirely_exclusive_to_the_human_experience.html

Animal communication links:

http://www.woodbridge.lib.nj.us/HumanAnimal.pdf

About Coxe and her initiative to help the bonobo.

http://www.citizen-times.com/article/20100205/COLUMNISTS/302050021/1044