An owner or keeper of an animal commits a violation of the Code if that animal is at large in the city.
(b)
Except as provided in subsection (c) of this section, section 531-501 or section 531-727, the first violation in any twelve-month period shall be subject to an admission of violation and payment of the designated civil penalty through the ordinance violations bureau in accordance with Chapter 103 of the Code. All subsequent violations in a twelve-month period are subject to the enforcement procedures provided in section 103-3 of the Code and a fine of not less than one hundred dollars ($100.00) per violation.
(c)
If, while the animal is at large in violation of this section it:
(1)
Attacks another animal; or
(2)
Chases or approaches a person in a menacing fashion or apparent attitude of attack;
then the violation shall be subject to the enforcement procedures and penalties provided in section 103-3 of the Code, and the fine imposed shall not be less than two hundred and fifty dollars ($250.00), or five hundred dollars ($500.00) if another animal or person is injured as a result of the animal’s actions. If the violation results in serious injury to any person, the court upon request shall order the animal forfeited and/or destroyed.

The cities defination of at large follows: “At large means being loose and free roaming, not being on a leash and under the control of a competent person, or any portion of the animal’s body not being confined within a pen, corral, yard, cage, house, vehicle, or other secure enclosure or structure or by other means that prevents escape.”