(1) As used in this section, “dangerous dog” means a dog that:
(a) Without provocation and in an aggressive manner inflicts serious physical injury, as defined in ORS 161.015, on a person or kills a person;
(b) Acts as a potentially dangerous dog, as defined in ORS 609.035, after having previously committed an act as a potentially dangerous dog that resulted in the keeper being found to have violated ORS 609.095; or
(c) Is used as a weapon in the commission of a crime.
(2) A person commits the crime of maintaining a dangerous dog if the person is the keeper of a dog and the person, with criminal negligence, fails to prevent the dog from engaging in an act described in subsection (1) of this section.
(3) Maintaining a dangerous dog is punishable as described in ORS 609.990.