Northern Territory Consolidated Regulations55A. Attack by dog
(1) A dog commits a Level 1 attack if the dog bites or holds a person or animal in its mouth whether or not:
(a) the holding is accompanied by biting, shaking, pulling or pushing; or
(b) the person or animal suffers any injury (physical or otherwise).
(2) A dog commits a Level 2 attack if the dog approaches, chases, menaces, harasses or rushes at a person or animal in a manner endangering or causing fear, alarm or distress to the person or animal.
(3) Clause (2) applies whether or not there is any contact or injury to the person or animal.