When does Black castle Queenside?

To my knowledge there is only one opening that black has the "explicit idea" or "theory has it" that black is supposed to castle queenside and that opening is the Scandinavian but other than that one are there any openings that also have the idea or theory that black goes 0-0-0?

Well the game of chess has black castling Queenside

Im talking about specific openings.

Black often castles queenside against the Bongcloud to reinforce the center against the onslaught of white's king.

whenever black wants to, if hes gonna pawnstorm the kingside.

There are some lines in the sicilian where black delays castling, and often finds himself castling queenside in the end.

I'm sure there are, some examples being some lines of the sicilian (like the kan, though kingside is still the most common spot), more often in the french, the albin counter gambit.

The Nimzovich Defense (1. e4 Nc6) has Black often castling queenside.

Semi-slav Botvinnik variation, Winawer poisoned pawn, some sicilian lines like the Richter Rauzer and 6.Bg5 Najdorf (not often though), and the Albin counter gambit are a few that I can think of. It seems much more common for white to go long.

I guess I wasen't so crazy after all. Castling queenside for black IS indeed rare...

I sense some wisdom in this simple observation...that basically brings my question to a close.

quite often in the french. 

Some Caro Kann variations I think ?

Yes, I have been doing some looking around in Caro Kann theory and have seen some compelling games where black castles long and then pawn storms the king side.

In some lines in the scotch meises

nice game ninevah

ahhh for black to castle queenside, you typically see alot of closed structures, for example, see the caro-kann, scandavian(centre-counter), french, for white to castle queenside is a whole different ballpark: msoewulff said", whenever black wants to, if hes gonna pawnstorm the kingside", and yes this is very much true, especially in the main lines of the sicilian najdorf as white. hmmmmm this is interesting i never see white queenside castle in anymore games other than in najdorf games....

No one mentioned Ruy Lopez exchange variation, where black usually castles long.

In some lines of the Petroff, and in some lines of the Najdorf Sicilian, Black castles queenside. There are probably many other openings like that, but those are two I happened to know off the top of my head.