State Minister of Wildlife Wimalaweera Dissanayake said that there was no change in the behavior and eating habits of the animals.
As a result, he said, another PCR test would be conducted to confirm whether they continue to remain infected with COVID-19.
The four animals have been separated from the rest of the animals and sent for quarantine.
A lion and a lioness at the Dehiwala Zoo earlier tested positive for COVID-19.
State Minister Wimalaweera Dissanayake stated that both the animals have recovered.
(Except for the headline, this story, originally published by newsfirst.lk has not been edited by SLM staff)