The Brussels times is quoting a Belgian virologist who states that the University of Luik has a suspect cat with SARS-CoV2 in its stool, possibly after being infected by the owner.
This was mentioned in a press conference by virologist Stephen van Gught. The cat started showing clinical signs including vomiting, diarrhea and dyspnea one week after the owner has clinical signs. And the virus was found in the stool of the cat using RT-PCR. Van Gucht stressed the fact that this is a transmission possibly from a human to a cat and not vice versa. Having genetic material present in the stool does not mean the cat has (had) an active infection.