Whereas rats usually stuck to the commercial areas of dense urban areas, where there was plenty of food to be had, they’re now increasingly venturing into more residential areas.

Community-wide closures have led to a decrease in food available to rodents, especially in dense commercial areas.”.

“They’re mammals just like you and I, and so when you’re really, really hungry, you’re not going to act the same.

You’re going to act very bad, usually,” Bobby Corrigan, an urban rodentologist, told NBC News.

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