Feral cats make Western Governor's list of invasive species

Weeds, feral cats, insects and other pests are invading the U.S. West, and state governors released a list of the worst offenders in hopes of helping people recognize and eradicate the invaders before they spread. The Western Governors' Association cataloged the top 50 invasive species in their region, saying the pests have already caused billions of dollars in damage to agriculture and infrastructure. Some of the species on the governors' list have been in the headlines before, including water-gulping salt cedar trees and quagga mussels. Others may be surprises, such as feral cats.