Neutral Mobs

Neutral mobs are mobs that do not attack the player, unless provoked in a specific manner. Before 0.9.0, spiders were the only neutral mobs in the game. However, Wolves and Endermen were added in 0.9.0.

Spider

 * Neutral during day
 * Hostile when in light level below 7

Cave Spiders

 * Behave similar to spiders
 * Only spawn in Abandoned Mineshafts and Mesa Mineshafts.

Endermen

 * Neutral unless looked at or attacked

Wolves

 * Become hostile only when attacked
 * When attacked, all nearby wolves will also persue the player

Trivia

 * There were only passive spawn eggs in PE till 0.9.0, but in 0.9.0 neutral mob spawn eggs were also added along with hostile mob spawn eggs.
 * Wolves are the first neutral mob that can be tamed.
 * If you are using spawn eggs in creative, all hostile mobs will spawn as neutral until provoked.
 * A tamed wolf will not become hostile when attacked.
 * Spiders are only semi-neutral.