Minecraft wiki entry for Spider, associated text: A spider.
Spiders are one of the most visible mobs at night due to their glowing red eyes.
Spiders climbing.
A view of a spider from below.
Spider shot by a skeleton.
A spider and its spawner in a dungeon.
A spider in a 1.5×1.5 space.
A spider's vision when spectating it.
Spiders can even climb soul sand.
A spider during late alpha.
A spider climbing a wall.
A spider with invisibility during the night.