When Blizzard revamped 1-60 in Cataclysm, the quest for this schematic was removed. (Umi still gives you Yeti-related quests, but the follow up for engineers only wasn't carried over during the revamp. See Quintessence's link above.) As Deviantelf said, you can get the pet through the Blingtron pack...

Havoc2317 wrote:Just got my achievement! Thanks for the info and help everyone.

Sorry for the late reply, but I've been offline for a few days. Glad to hear you got the achievement!

Still looking for someone to help? If so, what would be a good time to meet you in-game?

Rosz wrote:What is the best way to determine a pet's value? Is there a site somewhere?

I check the auction house and ask guildmates, but another resource is the Undermine Journal (forums won't let me link the site, but it'll be the first site that pops up when you search for it).

No problem, Tiz! I've updated the guild-wide inventory list to reflect your post above. The following are pets not currently on the same type of tab in each guild: Aqua Strider - Prize (LPL), Ask an Officer (MM) Ashstone Core - Free (LPL), Ask an Officer (MM, PP, WCP) Chrominius - Prize (LPL), Ask a...