You heard of people selling raptor hatchlings in World of Warcraft what are these and how do you get one without paying

In patch 3.2 a few new raptor pets have been added to the game.

Darting Hatchling, drops off Dart, a level 38 rare in Dustwallow March
Leaping Hatchling, drops off Takk the Leaper, a level 19 rare elite in The Barrens
Obsidian Hatchling, sold by Breanni, vendor in Dalaran (this one costs 50g)
Razormaw Hatchling, drops off Razormaw Matriarch, a level 31 rare in Wetlands
Razzashi Hatchling, drops off Razzashi Raptor, a level 57-60 elite in Zul'Gurub.

If you plan on getting one, don't get your hopes up too high, these mobs are heavily camped. Happy hunting :3