Your pet can't catch coronavirus. Here's why one dog tested positive

In the same way, coronavirus could be present on the surface of a dog or cat, even if the dog or cat hasn't actually contracted the virus. The AFCD is testing to see whether the dog has been infected with the virus or if it has just been contaminated with the virus.

https://edition.cnn.com/2020/03/02/asia/pets-coronavirus-spread-intl-hnk/index.html