Last year we had one living in a drain pipe at work in the tank farm that went to the water treatment plant.The operator went to drain the water off of the tank bottom and when the gasoline got down in the pipe the Nutria come rolling up out of there lickety split and started doing the hippy hippy shake.The wildlife response team took the thing to give it a good scrubbing but it didn't make it,the benzene was just to much for it.I pointed out that the WDFW's position on them is that any trapped or live caught nutria are supposed to be euthanized.It started to make sense what was going on,a state managed wildlife area is due north of the plant and has a couple big swampy/pond areas.I run my dogs there and had been seeing lots of odd looking tracks and scats,perfect match of nutria information on the WDFW website.Nasty looking little buggars and very prolific.