Coypu (nutria) are large semi-aquatic rodents invasive across Europe and North America, subject to extensive trapping and control programs.
Coypu caught in leg-hold traps suffer from the same welfare harms as other trapped animals: injuries from struggling, prolonged stress, exposure, and slow death before check or release. Bodygrip kill traps produce faster death when properly set but cause welfare harm when set incorrectly. The invasive species management imperative is clear in ecologically sensitive areas but welfare methods deserve ongoing improvement.