Oregon Revised Statutes Crimes and Punishments § 167.340

(1) A person commits the crime of animal abandonment if the person intentionally, knowingly, recklessly or with criminal negligence leaves a domestic animal or an equine at a location without providing minimum care.

(2) It is no defense to the crime defined in subsection (1) of this section that the defendant abandoned the animal at or near an animal shelter, veterinary clinic or other place of shelter if the defendant did not make reasonable arrangements for the care of the animal.

(3) Animal abandonment is a Class B misdemeanor.