Even more than 20 years ago, the Pennsylvania woodrat population was in decline. In October 2000, WGAL's Jack Hubley filed the report above about the woodrats' struggles and what sets it apart from ...

An introduced black rat scratches through leaf litter, looking for food. Nearby, a native water rat watches on, its beady eyes shining. The native rat pounces out from the shadows, sending the invader ...

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A rat infestation can destroy packaged food, packing materials, electric cables, and other important vulnerable materials. Rats have a highly developed sense of smell and avoid strong, pungent odors, ...

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 ...