Heavy amounts of radiation have turned the small and relatively harmless rodents of the Commonwealth into grotesquely large and mutated vermin. These large ancestors of Rad Rats of Nuka World in 2287 possess a great threat to survivors as they typically travel in large packs and their bites are not only poisonous, but also have an extremely high chance of infecting it’s victims with a disease.

FO4NW Rad-rat