Guild Wars 2 Developer Blog Update

Game designer Eric Flannum has penned a profile on one of the world's races, the Hylek, profiling the frog people's culture, life cycle and the behind the scene creation of this returning race.
Hylek live in small, independent tribes. These tribes consist of anywhere from a dozen to hundreds of hylek. Each tribe is ruled by a single hylek chieftain who holds sole and absolute authority. Successful chieftains typically consult with the priests and elder members of the tribe lest popular sentiment turn against them.

Individual tribes are extremely territorial and it is rare for them to cooperate with one another. The various tribes of the hylek are differentiated by color, which also hints at how aggressive that particular tribe is. In fact, the color of a hylek tribe is also a good indication of the strength of the toxins that they generate; those tribes that produce the deadliest toxins are the most aggressive and dangerous to outsiders. When first making contact with a hylek tribe, it is wise to approach cautiously until you can determine whether they will treat you as a guest and trade partner or as a threat to exterminate.