The Coronavirus can be transmitted from person to person when one coughs, sneezes, singing or talking. Even when you breathe, the resulted tiny droplets (aerosols) produced stay afloat in the air for a time and may be inhaled by other people. The risk of infection is particularly high in closed crowded spaces. You may also become infected with the virus if you touch a surface or someones' hand if it has the virus on it. However, this type of transmission seems to be rather rare.
A transmission via pets has not yet been reported. The virus can survive on surfaces such as Copper and cardboard for a few hours to a number of days.