|For the schizophrenic nightkin in the Fallout: New Vegas add-on Dead Money, see Dog and God.|
|This is an overview article which contains background information and cross-game comparisons. For game-specific information and stats, see the articles linked on the right.|
In the Fallout world, dogs are little different from the ones found in our world, though many have become feral and vicious in order to survive in the harsh environment of the Wasteland. Even so, just as they have in ages past, many dogs have remained faithful and beloved companions to men and women. Inarguably, the most famous of these post-nuclear canines was Dogmeat, the companion of the Vault Dweller.
Though most breeds of dogs remain largely un-mutated by radiation exposure, some modified or mutant varieties do exist. The centaurs are mutants created by mixing dog, human and brahmin DNA in FEV vats. Dogs were also subject to Enclave experiments, which resulted in cyberdogs.
Regular dogs with standard statistics and characteristics but no special attributes.
 Fiend guard dog
Fiend guard dogs roam the environs surrounding New Vegas with the notorious Fiends.
 NCR guard dogs
These guard dogs are commissioned by the New California Republic and are used in apprehending criminals and sniffing out foreign substances.
 Raider guard dog
These guard dogs patrol the Capital Wasteland with their raider masters and help sniff out any unlucky wastelander with a few caps.
 Scavenger's dog
A dog that is kept by scavengers for companionship and protection. If any harm is brought to the scavenger, the dog will attack.
 Talon company guard dog
Dogs that serve the mercenaries of Talon Company. They are quick, perceptive and, most of all, deadly.
 Legion mongrel
Legion mongrels are dogs owned and bred by the Houndmasters of Caesar's Legion. Mongrels are mainly used in combat and scouting missions by the Legion. Because of their thick, shaggy hair and their red-colored eyes, they are of a distinctly different breed than most dogs found in games.
Large dogs found throughout Dog City.
 Poison dog
Due to the harsh radioactive environment of Los, the dogs in the area have become glowing, poisonous and radioactive.
 Vicious dog
Vicious dogs are a nearly hairless species of wasteland canine with a close similarity pit bulls. Ruthless survivors of the wastes, these starving, irradiated mutts will attack anything that moves.
 White Leg mongrel
White Leg mongrels are wolf-like canines that travel throughout Zion Canyon with the White Legs.
 Wild dog
Savage dogs that society forgot about. They run the wastes in packs looking for critters, or better yet, the unwary traveler to prey upon.