Every person owning or keeping a dog shall be liable in damages for injury committed by such dog, and it shall not be necessary in any action brought therefore to allege or prove that such dog was of a vicious or mischievous disposition or that the owner or keeper thereof knew that it was vicious or mischievous; but neither the state, county, or city of Lindon, nor any peace officer employed by any of them shall be liable in damages for injury committed by a dog when: (1) The dog has been trained to assist in law enforcement, and (2) the injury occurs while the dog is reasonably and carefully being used in the apprehension, arrest, or location of a suspected offender or in maintaining or controlling public order. (Ord. 99-17, adopted, 2001; Ord. 97-1 §7, amended, 2000)