😕 A respiratory illness without a known cause has sickened dogs in several states. Veterinarians say the illness can progress to pneumonia in some cases.

Many dog owners are alarmed after an urgent health warning for canines started circulating online in recent weeks.

Some viral social media posts claim a mysterious respiratory illness that’s highly contagious and potentially fatal is spreading among dogs throughout the U.S. One of the posts warns owners not to bring their pets to dog parks or other places where dogs may congregate.

Many commenters responded to the posts with questions and concerns about the alleged illness and how it could affect their dogs.

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