Rather, it's the wonders of biology that fail us. Here is a picture of my character completing one of the many 'hearts' scattered around Tyria. You might recognize this one, as it's the heart that gives you rugged leather/linen for karma after you complete it.
Now, the quaggan look like manatees, so maybe the devs were thinking, "Here's an 'endangered species' with a Tyrian twist. And there are other races that you have to rescue from hapless slavers, relocate to new homes, and teach survival skills. However, this heart and a similar one where you have to find the quaggans' scattered eggs--that's right, they have lost track of their means of procreation--paints a dark picture of the intellect of these seemingly-intelligent creatures.
Mostly by fighting for them while groaning loudly and making quaggan noises (whooOOOoo) at the screen. Then, you get three chapters of the quaggan showing up to 'help' you fight, the way that marshmellows are essential to any successful marathon.