LOS GATOS, Calif. - An almost extinct, rare rodent has reemerged in Santa Clara County. Previously thought to exist only in Henry Cowell Redwoods State Park and nowhere else on earth, the Santa Cruz ...

Though they're not inherently dirty animals, rats scavenge in sewers and bins and can pass on serious diseases to humans. Leptospirosis (Weil's disease) is transmitted through their urine, and ...

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 – ...

WASHINGTON — 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 ...

A rat abatement poster hangs on a lamppost in a Chicago alley, announcing the area's last visit by city rodent control workers. Credit: Shawn Mulcahy My hair is neatly combed these days, no longer the ...

While the rats focused on explosives or survivors buried in rubble get all the glory, it is a group of rats inside a lab that are arguably the most impactful lifesavers. These are not typical lab rats ...