Wildlife

Weasel Welfare and Secondary Rodenticide Poisoning

The weasel, Britain's smallest carnivore, is highly vulnerable to secondary poisoning from rodenticides used in agricultural and pest control settings as it feeds heavily on small mammals.

Key Facts

Smallest carnivore in Britain, weighing as little as 40 grams
Feeds almost exclusively on small rodents, particularly field voles
Very high metabolic rate means it must eat frequently
Highly vulnerable to anticoagulant rodenticide accumulation through prey
No legal protection makes it vulnerable to persecution

Welfare Considerations

Secondary rodenticide poisoning causes internal bleeding and prolonged suffering in weasels. As a top predator of small rodents, weasels accumulate rodenticide residues from contaminated prey. Reducing unnecessary rodenticide use and using targeted, secured bait stations protects weasels and other predatory wildlife.

What You Can Do

Use rodent control methods that minimise rodenticide exposure
Always use secured bait stations inaccessible to non-target wildlife
Follow CRRU (Campaign for Responsible Rodenticide Use) best practice guidelines
Report signs of suspected rodenticide poisoning in wildlife to the Wildlife Incident Investigation Scheme
Advocate for stricter rodenticide regulations