And over a third (35%) of the team’s 143 Norway rat specimens (Rattus norvegicus), all sourced from those same northeastern cities, carried these mutations too—polymorphic alterations to the creatures ...

Urban mice are developing genetic resistance to rat poison, with 84% carrying VKORC1 mutations that make common anticoagulant baits ineffective.

Don’t wait for torn-open cereal boxes and holes in your walls—watch out for these early, often subtle signs that mice or other rodents are moving in. Jeff Somers is a freelancer who has been writing ...

Rats have become a growing frustration across Washington, D.C., as city leaders report a surge in complaints as residents say ...

Researchers recommend combining traps, sanitation, and other methods to manage rodent populations effectively Rats and mice living in some of the nation's largest cities may be becoming harder to kill ...

Rat infestation in many world cities appears to be soaring, especially in Washington, and a new study blames warming temperatures, urbanization and other human actions. A first-of-its-kind examination ...