the german ones do. According to NetRodent in this post,
http://www.gofuckyourself.com/showthread.php?t=138440 it's a lot. The number is really big and I'm too lazy for copy and paste but it's 5 digits past billion... whatever that is.
That # is really high so it must not be that high. The earth would fill up with roach carcasses if that were the case.
The german roaches are fuckin NASTY, I would never touch one if I could avoid it. These ones are cool, and mellow.