Bwahahaha As others have mentioned they do more harm than good in large populations. They're a pest because we would all die from the diseases they carry. Pet

Bwahahaha As others have mentioned they do more harm than good in large populations. They're a pest because we would all die from the diseases they carry. Pet rats and street rats are very different, and even more different are rats in wild nature. City rats are disgusting by nature because we humans can't help but pollute and litter for some reason. So when you see a city rat think about all of the trash you've seen in the city now imagine that's the diet that rat eats. Congrats you now have the knowledge as to why most of everyone doesn't want them around.