[EinNYC]

And the fleas inhabit rats and other rodents. Cats keep those populations down. So your suggestion to kill cats, I certainly hope, was with sarcasm. It was the killing of Europe’s cats, suspected of being allied with witches, that brought about the Black Plague by allowing the disease vectors, rodents, to multiply and spread.

[JRandomFreeper]

That's the point of burning the witches....

Seriously? Did I need a /s? ;)

/johnny

[Smokin' Joe]

And the fleas inhabit rats and other rodents.

Prairie dogs carry the plague, too (probably because of the fleas).