Neutral Mobs- Mobs that will not attack your player unless they are prevoked. (Already Explained in Animals and Passive Page.)
1. Wolf
Part 2. Neutral Mobs- (Non animal neutral mobs.)
Enderman An Enderman is a three-block-high, humanoid mob. Endermen will not attack unless the player's cross-hairs are directly on them. (Looking at them.) In creative mode, they will only attack if they are attacked, similar to wolves. In SMP, if the player looks at an enderman's head/eyes, it won't be alerted. However, if the player looks at its body or upper legs, it will become aggressive. Endermen frequently spawn in The End, their home world, but they still require a light level of seven or less in order to spawn. They will also spawn in the Overworld, although rarely in comparison to other mobs. They can be seen regularly at night in groups of up to five. Their two iconic abilities are the ability to pick up and move blocks, and to teleport. When teleporting, an Enderman will leave a faint trail of particles leading to itself from where it teleported. Endermen will take damage from coming in contact with water and rain.
Zombie Pigman A Zombie Pigman is an irregular mob that spawns naturally in The Nether and appears in The Overworld when lightning strikes within 3 to 4 blocks of a pig, which is a very rare occurrence. Like wild Wolves, Zombie Pigmen are not initially hostile, but they will converge on the mob or your player as a group to attack them if a single member is attacked.