The European polecat has recovered from near-extinction in Wales to recolonise much of England, with welfare challenges from road mortality, hybridisation with ferrets, and persecution.
Polecat welfare in recovering populations reflects the challenges faced by any wide-ranging carnivore recolonising a human-dominated landscape. Road mortality is the dominant welfare concern: polecats travel along drainage ditches, hedgerows, and watercourses that frequently cross roads, and their low-slung body profile makes them vulnerable to being struck by vehicles. Nocturnal activity timing partially overlaps with night-time traffic. Trap mortality also affects recovering polecat populations - stoat and rabbit traps set without exclusion mechanisms can kill polecats that enter them. As polecats expand into new territory, encounters with gamekeeper trapping operations increase welfare risk. The hybridisation question has welfare dimensions: ferret-polecat hybrids are legal to kill in some pest control contexts in ways that pure polecats are not, creating identification challenges with welfare and legal consequences. Successful polecat recovery in the UK represents one of the most positive conservation stories of the past 50 years, demonstrating that protection combined with reduced persecution can allow dramatic population recovery from very low numbers.