Nether Rays: WoW Battle Pets
Select a pet:

Vendor: Grella
Zone: Terokkar Forest
Faction: Sha'tari Skyguard - Exalted
Cost: 40 (unlimited supply)

TIP: You can search for a specific pet using any word found in the pet's name or item. You can also search using obvious keywords like "robot," which will return all robot-like pets.