Strongspell's Comments

Be prepared for a long grind.  It took me 87 Monsterous Spineclaw kills before the Spineclaw Crab finally dropped for me.  It appeared to me that the Ancient Spineclaws have about a 1% chance to spawn a Monsterous Spineclaw and I'm gessing the drop rate for the pet from a Monsterous Spineclaw is about 1%.

I killed the Ancients from just south of the Horde Flight path to just before where Zesque spawns.  I could kill 21 Ancients and then go back to the start and do it again.

Looked in the afternoon/evening found nothing.  At 8:06am saw 3 Barren Giraffes/2 calfs (poor/BB) in the group (wowhead indicates Barren Giraffes are found in Northen Barrens...this is not correct as these were in Southern Barrens) "wandering" from the north side of Desolation Hold (40,67) to the Horde defense barricades at Battlescar (44,66). 15 mins after captuing these 2...no other calfs spawned.  Found a solo calf at 46, 66 at 08:26 (poor/BB).  These may only spawn in morning.