Brown rats are generally larger and more aggressive than black rats. In many parts of the world, they displace black rats. At archaeological sites around the world, a certain subset of remains is ...

In New York, they forced the city to hire a "rat czar." In Chicago, they have prompted the deployment of feral cats. In New Orleans, they are literally eating police evidence. Now researchers are ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Brown rats are the undisputed winners of the ...

Brown rats are the undisputed winners of the real rat race. New research suggests that they crawled off ships arriving in North America earlier than previously thought and out-competed rodent rivals – ...

FILE - Rats swarm around a bag of garbage near a dumpster in New York on July 7, 2000. A study published Wednesday, April 3, 2024, in the journal Science Advances suggests that brown rats crawled off ...