This mod adds a new scary monster to Minecraft. The mutated creeper-spider!

Gunpowder (0-1) when killed by the player.
Think spider jockeys are scary? Watch out because the Creeper-Spider is much worse. This deadly menace combines the capabilities of both the creeper and the spider! It runs fast, climbs walls, and makes the spider stepping noise. Like the creeper, it explodes, gets supercharged by lightning, and attacks during both day and night! Its only weakness is the sight of a terrifying kitty.