Researchers at Hanover university's vet clinic present dogs which are able of detecting COVID-19 in humans's...
Filou, the 3-year-old Belgian shepherd which is able to detect COVID-19 in humans' saliva samples is seen at Hanover university's vet clinic, in Hanover, Germany, February 3, 2021. REUTERS/Hannibal Hanschke REFILE - CORRECTING YEAR.
