Fallout 3 creatures

This is a list of all creatures which appear in Fallout 3.

All Fallout 3 creatures when in proximity of others will fight each other, so long as they not in the same faction as grouped below. (For example, Deathclaws will attack Mirelurks, while Feral Ghouls will not attack Glowing Ones.) The exception to this is that Humans are always willing to fight Ghouls and vice versa.

Humanoid

 * Human : Arkansas, Enclave, Outcast, Brotherhood of Steel, Raider, Talon Company, Wastelander, Wildmen (The Pitt) etc.
 * Ghouls (sentient): Ghoul, Chinese Remnant
 * Ghouls (feral): Feral Ghoul, Feral Ghoul Roamer, Glowing One, Feral Ghoul Reaver (Broken Steel)
 * Super Mutants: Super Mutant, Super Mutant Brute, Super Mutant Master, Super Mutant Overlord (Broken Steel), Super Mutant Behemoth
 * Trog (The Pitt)
 * Hillfolk (Point Lookout)

Non-Humanoid

 * Brahmin, Mad Brahmin
 * Mole Rat
 * Yao Guai
 * Centaur
 * Dogs: Vicious Dog, Raider Guard Dog, Scavenger's Dog, Talon Company Guard Dog

Reptiles

 * Deathclaw
 * Mirelurk King (despite being a different species, they are grouped with regular mirelurks as one faction)

Crustaceans

 * Mirelurks: Mirelurk, Mirelurk Hunter, NukaLurk

Insects and arachnids

 * Fire ants: Fire Ant Worker, Fire Ant Soldier, Fire Ant Warrior, Fire Ant Nest Protector, Marigold Ant Queen
 * Giant ants: Giant Worker Ant, Giant Soldier Ant, Giant Ant Queen, Forager Ant
 * Bloatfly
 * Radroach
 * Radscorpion, Giant Radscorpion, Albino Radscorpion (Broken Steel)

Robots
Robots are not exactly creatures, but can be as much of a threat to your character (if not more, due to their ability to attack at range with powerful projectile weapons). It appears robots have a small weakness to energy weapons, and are rendered helpless by electro-magnetic pulses.
 * Eyebot
 * Mister Gutsy
 * Mister Handy
 * Protectron
 * Robobrain
 * Sentry Bot
 * Automated Turrets: Mark I, Mark II, Mark III, Mark IV, Mark V, Mark VI, Mark VII, Mark VIII
 * Spider Drone (Operation Anchorage)
 * Chimera Tank (Operation Anchorage)