Rats (a.k.a. Pandyssian Bull Rats) are enemies encountered in Dishonored both in swarms or alone. They're the carries of the rat plague, spreading the disease, which infects the inhabitants of the city of Dunwall. Rats can be encountered throughout Dunwall, both in swarms and on their own. They are aggressive in swarms, and large groups are more likely to attack Corvo if he nears them. While they are cowardly in smaller numbers, in swarms they can easily take down and consume a lone watchman in a matter of moments.