Scientists of the Far Eastern Federal University (FEFU), working as part of an international toxicologists’ team, studied fur samples of wild terrestrial mammals in Primorye, Russia. All samples contained persistent organic pollutants (POPs) that are resistant to decomposition, tend to accumulate in body tissues and are potentially risky for human and animal health. Some of them are prohibited by the Stockholm Convention. The research outcome was published in Environmental Science and Pollution Research.