Deadly 'mystery illness' affecting dogs spreading in US, respiratory virus symptoms adelaidenow.com.au - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from adelaidenow.com.au Daily Mail and Mail on Sunday newspapers.
Experts believe the unidentified condition, which leads to severe antibiotic-resistant pneumonia, is contagious and contracted by dogs in group settings.
Cases of a fatal respiratory condition in dogs have appeared in Oregon, Indiana, Illinois, Washington, Idaho, California, Nevada and throughout the Northeast as veterinarians scramble to determine what is causing the mysterious illness.