cave spider

A dark blue spider that spawns within abandoned mineshafts. Cave spiders have 12 health (6 hearts) and do light damage (1-3) plus 5-10 seconds of poison damage which can be deadly. They are smaller than regular spiders, allowing them to go through 1x1 holes. When in combat, it's best to use a stone or above level sword to defeat them. The enchantment "Bane of Arthropods" is very useful since it does extra damage to spiders. It's best to keep milk aswell to clear out the poison. When cave spiders die, they drop string and spider eyes

A big ass spider

Another work for a dank , dusty old out of service butt hole