Labrador sniffing dog 'Lotta' is ordered by trainer Sina Knisel to search for a sample at the training site for sniffing dogs of German Army (Bundeswehr) in Daun, Germany, July 24, 2020. The Bundeswehr sniffing dogs school and the veterinarian university of Hanover are developing a training programme to sniff out the coronavirus disease (COVID-19) with dogs at airports, border crossings and other highly frequented places. REUTERS/Wolfgang Rattay