@mr meowgi well, medically speaking,cats eat the rodents,so they become carriers of disease themselves. It wasn't the cats or the rats fault for that...it was still the humans fault.
Hi! I'm CAtNoir,not ChatNoir!It doesn't have anything to do with Lady Bug,and it's way older than the character. Also don't mind my ranting,I talk under the influence of the heat of the moment.