Persecution by gamekeepers is the main reason that this species became temporarily extinct in England (4). Polecats were declared vermin during the reign of Elizabeth I, and were perceived as bloodthirsty animals (3). Threats continue today in the form of accidental trapping and secondary poisoning with rodenticides (6). Other threats include road deaths, changes in land-use (such as hedge removal), and crossbreeding with feral ferrets (M. p. furo) (2), which threatens the genetic integrity of the species (4).