Research has shown that ferrets and cats are more susceptible to COVID-19 than other animals.
When there was a severe outbreak in 2003 of Severe Acute Respiratory Syndrome (SARS) in humans, scientists developed a protease inhibitor. This was further developed by veterinary researchers as a cure for coronavirus which is fatal in cats.

Because the drug has been tested in the lab and then on animal models (used in cats since 2003), researchers plan to start clinical trials in humans very soon.
Again, as I have reported a number of times, our pets have provided medical support for us. How wonderful that our beloved cats may indirectly save many lives worldwide. How hopeful it is that our scientists, including our veterinary medical professionals are a key to the cure of COVID-19. Many people do not realize how much our veterinary researchers have contributed to the overall health and well-being of people. Please read the entire article as reported by Science Daily.