The Paper Quote
Mare: We realized that the cosmetics store is just a front. Behind the lab with the white rats is most likely a secret lab where somebody... I don't freaking know, the military? Is funding research on a rat that runs towards gunfire, weaponizing an aggressive wartime rat, either as a, you know, end in itself, maybe carrying a little explosive backpack or something, or as a prototype for the same experiment on humans.
Quote from S02E04 - Impressing a Cop