Stoats and weasels are killed in large numbers by gamekeeper predator control operations, using traps that cause significant welfare harm.
Spring traps designed for stoats and weasels cause near-instantaneous death when properly set and positioned. However, improper setting and infrequent checking cause prolonged suffering. Glue boards for small predator control — illegal in many jurisdictions — are particularly inhumane. The welfare of stoats and weasels deserves consideration both in the UK and in New Zealand, where eradication of invasive stoats for seabird conservation creates genuine welfare-conservation tensions.