![](http://www.ecns.cn/hd/2020/04/29/91c3a5b1b1d24f0882cdfa9fd5dbdbbf.jpg)
A pet dog who is believed to be the first dog in the U.S. to have tested positive for the coronavirus that causes COVID-19 in humans, according to Duke Health, is seen in Chapel Hill, North Carolina, U.S. in this undated photo obtained from social media on April 29, 2020. The pug belongs to a family who is participating in the Molecular and Epidemiological Study of Suspected Infection (MESSI) research study at Duke University. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/04/29/dee09845ca0d429b90a598d7cb9459e2.jpg)
A pet dog who is believed to be the first dog in the U.S. to have tested positive for the coronavirus that causes COVID-19 in humans, according to Duke Health, is seen in Chapel Hill, North Carolina, U.S. in this undated photo obtained from social media on April 29, 2020. The pug belongs to a family who is participating in the Molecular and Epidemiological Study of Suspected Infection (MESSI) research study at Duke University. (Photo/Agencies)