85 pets
Durotar Scorpion
(61.0%)
(unlimited supply)
Binds when used
Use: Teaches you how to summon this companion.
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Horde (orc)
Idles about and will rarely sting its owner.
Pit-pattering footsteps; vocalizations (on-click)
Gives owner a short duration poison debuff, but it doesn't actually have any effect.
This pet will occasionally sting its owner giving a debuff that says, "You have been stung by your own ill-tempered scorpion."
Players can participate in the Argent Tournament, a permanent event in northeastern Icecrown, to earn Champion's Seals. A representative of each race sells a race-specific pet. Horde characters may purchase this and other horde-based Argent Tournament pets once they have successfully "championed" that race's cause through various quests. Alliance characters may purchase this pet through a neutral auction house and on occasion through their own auction house.
Vs. 
Critter
Vs. 
Flying
An ode to Scorpions: "Alas, Durotar Scorpion... sitting on your rock. You, like a hurricane, bring on the wind of change. I can't explain... but I'm still loving you, and I'll be loving you sunday morning and every morning. You escaped the zoo and now, together, we can enjoy the blackout of those big city nights. There's no one like you, Durotar Scorpion. No one." Five of you got the references. To you five I say, "Rock on!"
I'm Alliance, and this was in our AH for 4,850G. Another person had it up bid only for 50G. I bid on it, was outbid within the next 24 hours at some point, but thanks to the ability to check the AH remotely these days, I was able to re-bid from work (thank you, Blizzard!) and monitor it until I was alerted to the win. I am feeling SUPER lucky right now! :D
As you can see in it, it has a 1 second casting time and a 15 yard range. So your scorpion will stop for 1 second when he tries to sting you, and if you'll get out of range the sting won't land.