Photo 2 (IMAGE) Helmholtz Centre for Environmental Research - UFZ Caption Annegret Grimm-Seyfarth with specially trained detection dog "Zammy", a Border Collie. Credit André Künzelmann / UFZ Usage Restrictions None License Licensed 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.