Ravager

Ravagers are vicious predators who hide behind rocks in Outland and prefer to wait for their prey to come to them. They come in two distinct models, one with more spikes and glowing eyes. They can be found in Hellfire Peninsula, Shadowmoon Valley, and Blade's Edge Mountains.

Though ravagers are not normally native to Azeroth, The Exodar carried some native Outland creatures with it to Azeroth, including ravagers. When The Exodar crashed, it resulted in the unfortunate escape of these fierce beasts into Azuremyst Isle and Bloodmyst Isle, causing a disruption of the native flora and fauna there.

As a hunter pet

 * Sometimes picked up as an draenei starting pet or an Outland novelty.
 * It is also possible for a member of the Horde to travel to Azuremyst at low levels and acquire this pet, making it somewhat of a novelty for low-levels.

Trivia

 * The Ravager bears a striking resemblance to the Scrab, an enemy creature in the (Abe's Oddysee game, specifically) series.
 * Their models are called "crawler" and "crawlerelite".