Background:
Ancient Core Hounds are ponderous beasts that roam throughout Molten Core. They are one of the more frustrating elements of Molten Core at first. They come in multiple types and are one of the most fearful adds. They have very fast respawn timers at 18 minutes and the largest of all agro ranges in Molten Core. However, they soon become a non-issue once you kill Magmadar.

Attacks:
Attacks come in several flavors. You never know what type of Ancient Core Hound you will get until you fight him. They have a frontal bite attack that will attack most people in the front 180 degrees.. It is a good idea to keep these beasts facing away from the raid. Every Ancient Core Hound also has a long range fire AE that does about 800 damage.

They can also have one of the following AEs:

Short duration stun
200 fire resist debuff
50% spell and melee slow
Short duration confuse
30% less health
50% less int/spirit
Strategy:
Basic strategy is to simply have one tank at the front of the beast and everyone else behind. About the only AE worth dispelling is the 200FR debuff as that can greatly increase the damage taken from his fire AE. This mob goes down very fast and we don't bother with them too much anymore since they don't respawn once Magmadar is dead.

When we get an Ancient Core Hound add, we move quickly to reach it before it gets to the camp. You do not want a Core Hound in camp casting an AE stun or confusion when already engaged with another mob. Two healers is sufficient to keep a tank up on one of these.