Greater white-toothed shrew (Crocidura russula). (IMAGE) Faculty of Sciences of the University of Lisbon Caption Greater white-toothed shrew (Crocidura russula). This species is expanding in Europe and has been identified as having an invasive character in some islands, namely in Ireland. Credit Ana Cerveira Usage Restrictions Attribution is required. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.