A detailed write-up on the new Firelands gem beasts is now posted at the Petopia forums, here:
http://forums.wow-petopia.com/viewtopic.php?f=3&t=13256
Good hunting,
-- Nanluin
Thanks Nanluin! Welcome to the forums!
Awesome guide Nanluin.
Welcome to the Lodge!
Excellent write up! Now so many more pets to want....I'm thinking we all need bigger stables to fit all these new lovelies! So mean making so many new pets and not expanding our stables. 🙁
^^^^ x1000000
They shouldn't have introduced a new pet family OR new spirit beasts w/o giving us more stable slots.
Thank so much for the post! After many failed attempts, and stolen tames I finally got both gem beasts. Skarr being the hardest thanks to a hordie on our server who has been abandoning/retaming just to steal it from other hunters. (no it's not a pvp server). So now Preciious (karkin) and Niightshade have new homes and a very happy owner! 
Elendiil said:
...thanks to a hordie on our server who has been abandoning/retaming just to steal it from other hunters. (no it's not a pvp server)….
We also have a group at Moon Guard who tracks and kills the rare spawns in Molten Front. They especially take pleasure in killing while a hunter is around.
Since Blizz is not doing anything about this, I guess it’s just up to us to muster enough patience. Also, now that it’s back to school we’ll hopefully see less of these kids.
Grats on Karkin and Skarr, Elendiil!
Anj... that is interesting. Perhaps there is a means to enact a little roleplaying and counteract what they are doing by going after them as a PVP unit?