Otters at an aquarium in Atlanta have tested positive for Covid-19 but are expected to make full recoveries.
"They began exhibiting mild respiratory symptoms such as sneezing, runny noses, mild lethargy, and some began coughing," the Georgia Aquarium said in a statement.
The aquarium said the Asian small-clawed otters are doing well.
"Despite following all recommended health and safety protocols, it is suspected the otters may have acquired the infection from an asymptomatic staff member," the aquarium said in the statement, which was posted to Facebook.
Such transmission is rare, and the otters are off exhibit while they recover. The animals do not have direct contact with patrons.
The aquarium did not say how many otters tested positive. Animals, including otters, are not eligible for the Covid-19 vaccines.