“Vicious animal” shall mean any dog or other animal, except a dog assisting a peace officer in law enforcement duties, which has attacked any person or other animal, without provocation by such person or other animal, at a place other than on private property where the attacking animal is maintained by its owner. (§ 1, Ord. 950, eff. June 2, 1983, as amended by § 2, Ord. 1365, eff. December 6, 2007)