FOLLOW ON Complete coverage at CTVNews.ca/Coronavirus Receive the most important updates in your inbox Advertisement BEIJING -- Three pet cats that tested positive for coronavirus were put down in the northeastern Chinese city of Harbin, state-backed media reported, leading to a social media backlash at what some viewed as overkill in local efforts to contain the virus. The owner of the cats was diagnosed with COVID-19 on Sept. 21 and the local disease control agency euthanized her three cats, which also tested positive later, despite her objections, Beijing News reported late on Tuesday. "There is probably no professional medical treatment...