Queensland Consolidated Acts(1) The following are the categories of declared pests--
(a) class 1 pest;
(b) class 2 pest;
(c) class 3 pest.
(2) An animal or plant may be declared to be--
(a) a class 1 pest if the Governor in Council or chief executive is satisfied it--
(i) is not commonly present or established in the State; and
(ii) has the potential to cause an adverse economic, environmental or social impact in the State, another State or a part of the State or another State; or
(b) a class 2 or class 3 pest if the Governor in Council or chief executive is satisfied it--
(i) is established in the State; and
(ii) is causing, or has the potential to cause, an adverse economic, environmental or social impact in the State, another State or a part of the State or another State.
(3) In deciding whether to declare an animal or plant to be a class 2 or class 3 pest, the Governor in Council or chief executive must have regard to the following--
(a) the significance of the animal's or plant's impact or potential impact;
(b) the area affected, or likely to be affected, by the impact;
(c) the extent to which the animal or plant has spread or is likely to spread.