The wiki says normal spiders need a 3x3x2 area to spawn, I was wondering how true this is?
I've noticed them spawn in areas 2x2x2? Any help is appreciated.
Source: http://www.minecraftwiki.net/wiki/Spider
UPDATE: Image of spiders spawning
http://postimg.org/image/67bo9lkh1/
Best Answer
The 3x3x2 spawning requirement is referring to the empty space. Spawning only requires a solid block under the spawn area.
This means that the requirement is a 3x3x2 area of empty space with a solid block under the middle empty block. With that in mind, it is easy to see numerous valid spawning locations in your screenshot.