The virus is passed from animal to animal through “respiratory secretions,” Dr. John Gicking of BluePearl Veterinary Partners in Tampa, Florida, told The Dodo. Dogs can spread the virus through simply “barking, coughing and sneezing,” Gicking said. “Contaminated objects, such as water bowls, toys, food, clothing, shoes and leashes can also harbor the virus and cause transmission.”
This makes areas where pets congregate, such as doggy day cares, kennels and dog parks, hot spots for disease transmission.
But just because your pet has been exposed to a strain of the virus doesn't mean he will show symptoms, Gicking noted. Eighty percent of dogs exposed to the virus will develop signs of the disease within one to five days, while the remaining 20 percent will show no symptoms whatsoever. If your dog went to the park a week ago and seems as spry as ever, you’re probably in the clear.