Mutant hound (Fallout 4)

Mutant hounds or FEV hounds are creatures found in the Commonwealth and are present on the Island in 2287.

Background
These are dogs that have undergone major mutations from being exposed to the Forced Evolutionary Virus. Usually, they are accompanying super mutants. They may have been created in the FEV lab of the Institute, along with the rest of the super mutants that are seen throughout the Commonwealth.

Biology
Mutant hounds are usually several times bigger than normal stray dogs and mongrels. The modification imposed on their bodies by the Forced Evolutionary Virus is similar to the one the super mutants went through: increase of muscle mass, depigmentation of the skin to a greenish color and complete loss of body hair.

Gameplay attributes
Mutant hounds will alert nearby mutants using a very loud howl. Their bite inflicts radiation damage. They normally attack in packs of up to three. They can also be tamed if one has the Animal Friend perk and be captured with Wasteland Workshop installed.

Mutant hound
Mutant hounds are dogs that have been infected by FEV. They will not attack super mutants of any type, and will make a loud howl to alert other super mutants in the area. They are usually in packs of other super mutants.

Glowing mutant hound
Glowing mutant hounds share the same appearance as the basic variant but they have more hit points than their regular counterpart, and can deal a decent amount of radiation damage with a bite. As such, they still emit a loud howl to alert other super mutants of a threat.

Locations
Mutant hounds can be found accompanying super mutants throughout the Commonwealth as well as the Island.

Notable mutant hounds

 * Gracie, a mutant hound sold by Erickson that acts like any normal guard dog.

Appearances
Mutant hounds appear in Fallout 4 and its add-on Far Harbor.