Mayor Mike Rawlings said Sunday morning that the health care worker who has fallen ill with Ebola kept a dog in her apartment.

There were no signs that the dog was sick, Rawlings said.

He said there was a “plan to take care of the pet,” but he didn’t elaborate.

Shortly before 7 p.m. Sunday, Dallas police reported that a worker in protective gear had entered the apartment to give food and water to the dog.

The animal’s possible exposure has worried some neighbors and animal lovers. In Spain, there was an international outcry after authorities euthanized a dog belonging to a nurse who fell ill with the virus.

A 2005 study published in a scientific journal found that dogs can contract the Ebola virus but don’t show symptoms.