Ants (???)

Couple of great resources about ants:

1. http://home.att.net/~B-P.TRUSCIO/STRANGER.htm
2. http://ant.edb.miyakyo-u.ac.jp/INTRODUCTION/Gakken79E/Page_02.html

Interesting research from MIT about interactions of individuals inside a community of robots, inspired from the ant colony.
http://www.ai.mit.edu/projects/ants/