Sniffing Labrador retrievers join Thai coronavirus fight

A Labrador Retriever named Bobby sniffs sample of human sweat through containers to detect COVID-19 coronavirus at Veterinary Faculty, Chulalongkorn University in Bangkok, Thailand Friday, May 21, 2021. Thailand has deployed a canine virus detection squad to help provide a fast and effective way of identifying people with COVID-19 as the country faces a surge in cases, with clusters found in several crowded slum communities and large markets. (AP Photo/Sakchai Lalit)