You will need this licence if you intend to take and / or release dangerous fauna threatening public health or safety, stock or domesticated animals. To take means to kill, capture or harm. Fauna means any animal native to Australia, and any animal that periodically migrates to and lives in Australia and includes any animal declared to be fauna by the Agency.
Your licence may specify among other things the number and species of fauna which may be taken; by whom, where, when and in what manner the fauna may be taken.