Facebook hasn't yet opened up a site for zebras. Even so, social networking is taking off for them, too. By using social network theory to understand how zebras interact, scientists hope to explain why the plains zebra is thriving while the Grevy's zebra is endangered.
This graph depicts the social relationships among zebras in a group. Each circle represents a zebra, and the lines connect zebras that spent time together. The graph reveals that many of the zebras hang out together in a single group, while a few of the zebras form smaller communities.
This graph shows a dynamic version of the network graphed in the first image. Each row shows all the zebras that have been detected at a particular moment, with each circle representing an individual zebra. The vertical lines connect an individual zebra to itself over time. Zebras in the same community appear in the same color.
This zebra is wearing a wireless GPS tracking collar.
clipped from: www.sciencenews.org 
