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Cats, dogs, dolphins and more animals get Covid-19 tests

As Covid-19 cases surge in the US, one Texas veterinarian has been quietly tracking the spread of the disease — not in people, but in their pets.



a dog sitting on a table: Texas A&M University student Ed Davila holds Stella, one of hundreds of household pets tested during A&M's study of pets exposed to Covid-19 by their infected owners. The 2½-year-old Pomeranian tested negative.


© Sarah Hamer/Kaiser Health News
Texas A&M University student Ed Davila holds Stella, one of hundreds of household pets tested during A&M’s study of pets exposed to Covid-19 by their infected owners. The 2½-year-old Pomeranian tested negative.

Since June, Sarah Hamer and her team at Texas A&M University have tested hundreds of animals from area households where humans contracted Covid-19. They’ve swabbed dogs and cats, sure, but also pet hamsters and guinea pigs, looking for signs of infection. “We’re open to all of it,” said Hamer, a professor of epidemiology, who has found at least 19 cases of infection.

One pet that tested positive was Phoenix, a 7-year-old part-Siamese cat owned by Kaitlyn Romoser, who works in a university lab. Romoser, 23, was confirmed to have Covid-19 twice, once in March and again in September. The second time she was much sicker, she said, and Phoenix was her constant companion.

“If I would have known animals were just getting it everywhere, I would have tried to distance myself, but he will not distance himself from me,” Romoser said. “He sleeps in my bed with me. There was absolutely no social distancing.”

Across the country, veterinarians and other researchers are scouring the animal kingdom for signs of the virus that causes Covid-19. At least 2,000 animals in the US have been tested for the coronavirus since the pandemic began, according to federal records. Cats and dogs that were exposed to sick owners represent most of the animals tested and 80% of the positive cases found.



a woman holding a cat: Kaitlyn Romoser and her 7-year-old cat, Phoenix, both tested positive for the coronavirus. Romoser tested positive in March and again in September.


© (Emil Koseoglu/Kaiser Health News
Kaitlyn Romoser and her 7-year-old cat, Phoenix, both tested positive for the coronavirus. Romoser tested positive in March and again in September.

But scientists have cast a wide net investigating other animals that could be at risk. In states from California to Florida, researchers have tested species ranging from farmed minks and zoo cats to unexpected critters like dolphins, armadillos and anteaters.

Fur farm outbreaks

The US Department of Agriculture keeps an official tally of confirmed animal Covid-19 cases that stands at several dozen. But that list is a vast undercount of actual infections. In Utah and Wisconsin, for instance, more than 14,000 minks died in recent weeks after contracting Covid-19 infections initially spread by humans.

So far, there’s limited evidence that animals are transmitting the virus to people. Veterinarians emphasize that pet owners appear to be in no danger from their furry companions and should continue to love and care for them. But scientists say continued testing is one way to remain vigilant in the face of a previously unknown pathogen.

“We just know that coronaviruses, as a family, infect a lot of species, mostly mammals,” said Dr. Peter Rabinowitz, a professor of environmental and occupational health sciences and the director of the University of Washington Center for One Health Research in

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