Nope. Seeing as only those races can access those areas, it would present too much of a money-maker for people creating them.

Mail a bunch of gold to your character, log in, get the gold, then buy a ton of pets, and sell them on the AH.

There are, however, vendor greys exclusive to those areas. I don't know about the Worgen area, but on WoWHead they list chunks of rock from the Goblin starting area that you can only get there (chunks of the Kezen), While they aren't as valuable as pets, there is a market for such grey items. Anything that can't be gotten anymore, or is from a limited place like that, is worth something to someone.

Drakk, they could still sell their pets in the cities they live in in the main game. Like a Goblin Pet Vendor in Orgrimmar in their Slums, or a Worgen Pet Vendor in their tree in Darnassus.

Now that I think about it, Trolls and Gnomes don't have minipet vendors either do they? Not even in Orgrimmar/Ironforge. So I guess there is a precedent, mainly in a "if you live in a town that someone else owns, you don't get a pet" way.

I don't know about Gnomes, but the Troll pet vendor (before the Sundering, I haven't needed to look for him recently) wandered around near where mage portals dropped you off in Orgrimmar and sold a collection of snakes. IIRC, there was no orc vendor, though.

The Gnomes have a Snowshoe rabbit I believe. It's sold in Dun Morough.

@ryanretherford:

That's sold by a Dwarf.

Were you talking about Argentina tournament pets? Because that makes more sense than what everybody here thinks.

Trolls have a snake vendor. He circles the troll area in Orgrimmar. And he used to pace the Valley of Spirits before the Shattering.

That's true. I was assuming he meant pets in the starting areas since almost all of the other race-specific pets are sold in the cities.

Like you said, not all races have them, either. I guess with Gnomes and Trolls considered "outcast" from their original homes originally, they figured they wouldn't exactly be up and selling pets.

Gnomes could get a mechanical pet maybe? Rabbits would make sense, but they just stuck one in as an Engineering pet. So many mechanical animals in the game already, it's hard to pick one that would make sense that isn't already used.