Status Update (1)
Almost done. All pets 25, now just need to acquire a Rocket Chicken and I'm done until WoD.
Additional Comments by Date (3)
Like all the other lvl 100 rares in the daily area, Orumo is lootable once per day. Many people have noted that he is only active on days when the garrison daily is Shattrath.
The drop is not guaranteed, but it is personal loot. 1 person in our 7 person group got the pet.
We needed 5 people to stand on runes next to the boss. We did not need to clear the other imprisoned demons nearby.
There are safe paths to the plateau from the south and south east through the mountains.
After one trip around all of Hillsbrad while battling every pet, I saw 8 Snowshoe Hares, all secondary pets.
3x with Lofty Libram
2x with Rabbit
1x with Toad
2x with Spider
Stopped when I found a rare with a Spider on the west side of the zone.
I don't remember how many chests I went through, 40+. I started with around 25000 coins when I went in and by the time I got him I had 3000 to spare.