What's with the curlicue dragon graphic wrapped around the portrait of that mob? Aren't they usually gold? This one's silver. Hmmm ... And whoa, why does that Gnoll over there have a name? He's got one of those gold dragon things, too. Do you think -- CRUNCH!
Special names, special graphics ... Special attacks, special ZOMGWTFBBQ levels of health ... It's unobtrusive little details like these that might, just might, have something to do with the fact that you just got epicly pwned. Make no mistake: these are special mobs, the elites, nameds and rares of Azeroth and beyond.
WoW Rookie would never allow you to wander about the wilderness unaware of the dangers that lurk. Let's go over a few signs that suggest you may want to look before you leap.