Although this could be called a re-post I decided to post this anyway, as I couldn't find a guide updated to the new Darkmoon Faire.
This is a guide to obtain the pet Jubling, not many people know about this and it could be a potential money maker now that you can trade battle pets!
As brewfest is now on it is a lot easier to obtain the items required to get this pet. All that is required is you to either use Direbrew's Remote, or queue for Coren Direbrew. When you're in the grim guzzler you will need to look for Plugger Spazzring and buy the 10 Dark Iron Ale Mug that he has in stock. You're now set until the Darkmoon Faire arrives.
Next sunday when the Darkmoon Faire becomes active you will need to look around for Jubjub, he can be found very often in the forests. When you have found him you need to lure him to an NPC named Morja, you do this by placing the Dark Iron Ale Mugs on the ground, Jubjub will be lured into these, keep doing this until you place the final mug at Morja's feet - Make sure you leave 1 Dark Iron Ale Mug to spare or you won't be able to complete it! Morja will now offer you the quest Spawn of Jubjub. Hand in the final Dark Iron Ale Mug to complete this and you'll be awarded with an Unhatched Jubling Egg. Wait 7 days and the Jubling pet will be yours!