Rat (Fallout)

Background
For some reason they appear to have survived the atomic bombs of the Great War and continue to multiply. Even after the Great War, the people see them as vermin. Later, they are considered as easy prey, so people started to eat their meat.

Biology
The rats aren't directly affected by radiation/mutation. The rats are usually encountered in large groups, even with mole rats or pig rats.

Gameplay attributes
The rats are the weakest enemy the player chracter can encounter.

Appearances
The rats appear in Fallout and Fallout 2.