We thought you guys wouldn't want to miss this -- 5 free Pet Cash from PetVille, and all you've gotta do is click here. For the curious, this was announced on the game's official Facebook fanpage, so we recommend making yourself a fan of the page for more offers. This is probably what Zynga wants, since there's no special reason attached to the giveaway.
One thing's for sure, you can't ever accuse PetVille of being stingy. Of all the Zynga games, and even Facebook games, that I've tried, PetVille has the most opportunities for players to earn premium game currency through just playing.