I finally have enough data from the beta to post a decent preview of companion pets introduced in the expansion! This might not be the final list but it's much more impressive than the first one I posted a few weeks ago, I think we had 3 pets back then. And well, you could always visit Warcraftpets, Breanni is nice.
A couple of achievements will reward you with new pets, most of them are Guild Achievements unlocking the ability to purchase these pets for gold in the guild reward panel, assuming you have enough reputation with your guild.
- Armadillo Pup is the reward of Critter Kill Squad (Guild)
- Dark Phoenix Hatchling is the reward of United Nations (Guild)
- Guild Herald is the reward of Saving For A Rainy Day (Guild)
- Guild Page is the reward of Horde Slayer / Alliance Slayer (Guild)
- Pebble is the reward of Rock Lover (Player)
Professions get a fair amount of pets in this expansion, if your plan is to get absolutely all the pet you will probably have to learn and drop a couple of professions.
- Clockwork Gnome is an Archaeology rare loot - Clockwork Gnome
- Crawling Claw is an Archaeology rare loot - Crawling Claw
- De-Weaponized Mechanical Companion is an Engineering item - De-Weaponized Mechanical Companion
- Elementium Geode is found randomly by miners in Elementium mining nodes, the pet isn't BoP and can be sold.
- Enchanted Lantern seems to be an Enchanting pattern in a NYI state Formula: Enchanted Lantern
- Fossilized Hatchling is an Archaeology rare loot - Fossilized Hatchling
- Magic Lamp also seems to be an Enchanting pattern in a NYI state Formula: Magic Lamp
- Personal World Destroyer is an Engineering item - Personal World Destroyer
A couple of pets are rewarded through quests, including the super awesome Sunflower.
- Blue Mini Jouster is one of the reward of Egg Wave (Can only pick one)
- Gold Mini Jouster is one of the reward of Egg Wave (Can only pick one)
- Brazie's Sunflower is the reward of Lawn of the Dead.
- Mr. Grubbs is also part of a questline, kinda, and is going to be a giant pain in your ... to farm
If a pet cannot fit in one of the category above, it's most likely here!
- Tiny Shale Spider is a rare drop from a rare elite named Jadefang in Deepholm.
- Rustberg Seagull is a Tol Barad rep reward: Rustberg Gull / Rustberg Gull
Real Life Events
Two pets are tied to real life events, you probably already know about them.
- Deathy is the Blizzcon 2010 pet, rewarded for attending the Blizzcon or buying the Stream.
- Lil' Deathwing is the Cataclysm Collector's Edition reward.
The drop locations of these pets is still unknown.
- Eat the Egg / Hardboiled Egg
- Fox Kit
- Landro's Lil' XT
- Rumbling Rockling
- Whirling Waveling
- Swirling Stormling
Landro's Lil XT
Originally Posted by Blizzard Entertainment
The official website has been updated with a very nice wallpaper.