silverfish (minecraft)
Small, grey hostile mob found hiding in infested stone-like blocks in mountains, strongholds, igloo basements and woodland mansions.
Despite dealing low damage, those bugs can be really annoying to encounter because of their small hitbox and they seem to come out of nowhere due to lack of visually-distinguishable way to tell infested stone blocks apart from normal ones. There is also a chance to find a silverifsh spawner inside a stronghold. Has 8 health points (4 hearts).
Breaking stone blocks with Silk Touch pickaxe will prevent silverfish from coming out. Bane of Anthropods enchantment deals more damage against them. Silverfish drop nothing upon death but a few experience orbs.