OK so Today I was doing some quest up in Skettis (terokkar forest) called "Hungery Nether Rays" (Thottbot World of Warcraft: Quest: Hungry Nether Rays) and you get to summon a full size nether ray out of a cage.
I haven't tested it but I know it's usable in terokkar forest maybe other places too?
Ne way thought i'd share, maybe you could try it out.