Weasei's Comments

This guy is pretty sweet, his idle animations include a little bouncy dance, and I have also seen him chuck a fire ball at my Crawling Claw, causing it to despawn.

This pet is available at the online store for 10$, 10 euros, or 8 GBP.
For your money you get only one pet for your whole account (other pet store pets give you the pet automatically on all characters). Prior to purchase you choose the character that should receive the pet.

This pet is the first item which can be legitimately bought with real money and sold on for in-game currency.

100 Dwarf Archaeology Fragments may seem like a lot but if you put on 3 maximum of 3 Dwarf Rune Keys, then you only need to farm 64 Fragments to complete this little guy, definitely a worthwhile farm though.
Dwarf dig sites can be found primarily in Burning Steppes, Searing Gorge, Badlands, Loch Modan, and Arathi Highlands.

Kill 50,000 critters! Plenty of good farming spots (critters are far more common since patch 4.0.3), though one I recommend is the tunnel between Plaguewood Tower and Thorondil River in Eastern Plaguelands which is full of arachnids and roaches.

There was a bug with groups of sheep in Uldum, where if you AoE'd two groups at a time they were instant respawns. Sadly fixed.

Requires Exalted with your Guild, though they may be changing this to Revered.

You have to continue the quest-line (which starts at Morgan's Vigil) through Burning Steppes for this guy, but it's obviously worth it! The quests are straight-forward and it's obvious what you have to do, you should get the Seven Yup quest between halfway and three quarters of the way through the Burning Steppes Quests achievement.

This guy is easy to obtain, go to the flight path in the east of Eastern Plaguelands, take the quest from Fiona, do it, then come back to her at her caravan. Whether you continue the quest chain or not is up to you (there is an achievement for finishing it).

Interact with her caravan and choose "Fiona's Lucky Charm", which will allow you to loot [Hidden Stash] from any mob. This item can be opened and is where you find your pet. Got mine from 3rd bag while doing the quest-line.

This pet is still available despite the shattering completely transforming the Stranglethorn area, not yet sure what it drops from though which is why I was farming it up to 1:30am yesterday in the hope of getting one while I still knew what to kill.