The ender dragon is minecrafts first boss mob. It is found in the Ender, and IT IS SO FREAKING HARD TO KILL!!!!! In order to kill it, you must destroy all of its healers which are ontop of the obsidian towers. Also in the Ender(or the End) there are a whole bunch of endermen every where. When you kill the dragon, you get 12,000 xp and a portal apears. There is also a ender dragon egg ontop of the portal. You have to mine the egg, but it will teleport around.

The Ender Dragons health: 100 hearts

Attack damage: 5 hearts.

Drops: portal back to the normal world, ender dragon egg 12,00 XP(lol)

Once you kill the dragon and go through the portal, you have to watch the extremly long(and boring) credits. Also the only way to go to the end is through the portal in the next chapter.