Slyde's Comments

RE: Sound - You CAN mute this pet (and all others) under System>Sound>Playback>Enable Pet Sounds.  Just uncheck the box.

I had already completed all the quests in Uldum, so the pets in the 'Cradle of the Ancients' disappeared once I landed.  However, just north of the Cradle is the 'Oblisk of the Sun'.  All around that are several sets of 3 battle pets.  I killed off the non-lizards and eventually Horned Lizards spawned.  As I checked those, I killed off two and raid-marked the third.  New Horned Lizards would spawn with the one I left raid-marked and I had my rare in about 30 minutes.

Chimeretsu, I have the same problem.  I have tamed two Black Lambs but it has been not counted in the acievement.  I filed a ticket with support and I'm still waiting to hear back.

They may have improved the drop rate as I got it in my first bag too.  This should be listed under Molten Front instead of Mt Hyjal.