The H5N1 bird flu strain has been identified in seabirds in two Australian states, raising alarms for poultry and pet owners.
The virus is zoonotic, meaning it can jump between species; cats are at a higher risk of severe illness than dogs.
Backyard chicken owners are urged to keep flocks housed to avoid contact with wild birds that act as carriers.
Any suspected cases of bird flu must be reported immediately to the Emergency Animal Disease Hotline at 1800 675 888.