Erick Smith, full-time ecologist and co-owner of Kestrel Ecological Services, said cats are an invasive species, and he’s ...

Postdoctoral fellow studies roaming animals' effect on migratory birds. May 24, 2011 -- Several residents caring for feral cats in the Washington, D.C., neighborhood of Columbia Heights noticed a ...

JOHNSON CITY, Tenn. (WJHL) — The National Feline Research Council reports feral cats who have not been sterilized can produce up to 5,000 kittens in seven years. These feral cats are mostly born and ...

The National Park Service says invasive species are posing challenges to natural ecosystems, leading to threats to native wildlife and even humans. Rangers say some of the invasive pests have been ...

Two cats tested positive for bird flu in Hunterdon County, New Jersey One cat was feral, the other was indoor-outdoor The feral cat was euthanized after developing "severe disease" Humans who came ...