If an animal enforcement officer, police officer, or humane officer finds an animal at large, and if the animal enforcement officer, police officer, or humane officer reasonably believes that the animal is a vicious animal and that the animal cannot be taken up or tranquilized and impounded, the animal enforcement officer, police officer, or humane officer may kill the animal. City Code, 1976/83, art. 11, §40A(g) Ord. 99-548 Ord. 11-573