You can't.
No, there is not a breeding center in Pokemon XD, Gale of Darkness.
No unless you breed the purified quilava from Pokemon colosseum OR get one from emerald/xd gale of darkness.
obtain the odd incense and then breed mr.mime but it all on bulbapedia really XD
To get a cyndaquil u must trade one from Pokemon emerald or Pokemon xd gale of darkness or breed the purified quilava from Pokemon colosseum
There is no under in Pokemon Xd, there is in Pokemon Colosseum
No totodile is not available in sapphire you will need to trade one from Emerald or Pokemon XD Gale of Darkness also you can breed the shadow Crocanaw from Pokemon Colsseum to get totodile as well.
You must get the purified croconaw from Pokemon colosseum or a totadile from Pokemon emerald or one from Pokemon xd gale of darkness then trade it to firered if you have the croconaw you just need to breed it to get totadile.
Pokemon xd in my opinion
Pokemon XD is a Pokemon game for Nintendo GameCube.
First you need a magmar leafgreen and Pokemon xd gale of darkness can get magmar trade magmar to ruby then breed it hatch the egg to receive magby.
You can't catch it you have to breed electabuzz to get elekid you can also take one from Pokemon xd gale of darkness.
You cannot snag a legit whismur in Pokemon XD, only trade to Pokemon XD from another game.