A Spider Jockey is the rarest known hostile mob. When this mob spawns,
there is a very rare chance (1%) that a skeleton will spawn with it on a spider's back. This can be a very deadly
combination, as spiders move very fast and can climb walls, and skeletons can
shoot from far range. This mob is treated as two mobs, so when one dies the
other survives. If you are beneath the spider, the skeleton will shoot the
spider instead of the player. In creative mode a spider spawn egg has 1% chance
of spawning a spider with a Wither Skeleton riding it instead of normal
skeleton, but only in the Nether. Skeletons will spawn if a Spider spawn egg is
used in the Overworld
there is a very rare chance (1%) that a skeleton will spawn with it on a spider's back. This can be a very deadly
combination, as spiders move very fast and can climb walls, and skeletons can
shoot from far range. This mob is treated as two mobs, so when one dies the
other survives. If you are beneath the spider, the skeleton will shoot the
spider instead of the player. In creative mode a spider spawn egg has 1% chance
of spawning a spider with a Wither Skeleton riding it instead of normal
skeleton, but only in the Nether. Skeletons will spawn if a Spider spawn egg is
used in the Overworld