Nearly 1,000 rat-like creatures reported to be 2.5-feet and weigh 20 lbs have been spotted in the Bay Area, SFGate.com ...

Disease ridden rat-like creatures with bright orange teeth are spreading panic in California as their population explodes.

Invasive species of rodents from South America threatened SF Bay Area as levee-wrecking nutria spread to new areas.

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Thanks to escapees from private collections and zoos, hitchhikers and releases of inconvenient pets, followed by the breeding ...

The coypu is a rodent native to South America, but has since spread to North America and parts of Europe. It is also one of several invasive species in Ireland seen as a threat to the local habitat.