It’s National Invasive Species Awareness Week, and the U.S. Fish and Wildlife Service is highlighting an animal that’s causing major erosion to the banks of ditches, lakes, and other water bodies.

They don't have checks and balances to keep them from causing harm. States still dealing with 20-pound, orange-toothed invasive rodents: '[A] major concern ... because of the significant threat they ...

A nutria is a large, semi-aquatic rodent native that is approximately 2 feet long. Its features include a large head, short legs, and a stout body that appears hump-backed on land. Their fur is ...

Strolling atop levees at Grizzly Ranch in the Suisun Marsh, south of Fairfield, wildlife biologist Robert Eddings stops in front of a brackish pond. Unlike most of the surrounding wetland, this pond ...

The nutria rodent has become a migrating problem in the Central Valley, including sensitive wetlands in Solano County. That could be a significant threat to local agriculture. A large, fast-breeding ...

Hollywood would have difficulty inventing a rodent as scary as the South American swamp beast that has gained a toehold in the Sacramento-San Joaquin Delta. Imagine a rat-looking creature weighing ...

Q. What are nutria, and why are they now considered a pest? Nutria (or coypu) are like gophers on steroids. Related Articles How to use (and not use) plant identification phone apps Want to attract ...

Q. What are nutria, and why are they now considered a pest? Nutria (or coypu) are like gophers on steroids. Since they live near water, they are often mistaken for beavers or muskrats. There are some ...

Nutria, like those seen in this file photo, are considered invasive in the U.S. Here’s what to do if you see one in southern Illinois. Amanda McCoy amccoy@star-telegram.com Southern Illinois has seen ...