No person owning or being custodian or having control of any animal shall cause or allow such animal to be unleashed in any park, except under the express terms of a permit granted by ParksCorp or within designated animal run areas. Any such animal found at large may be seized and impounded. Properly licensed dogs and cats, restrained by a leash not exceeding six feet in length may be brought into the parks, except in no event are dogs or other animals be allowed to enter any playground, park building, dog free zone or any other area where they are prohibited by ParksCorp. Nothing in this section shall be construed to prohibit persons with disabilities from bringing into such areas service animals, including guide dogs, signal dogs, or other animals individually trained to do work or perform acts for the benefit of an individual with a disability, including but not limited to guiding individuals with impaired vision, alerting individuals with impaired hearing to intruders or sound, providing minimal protection or rescue work, pulling a wheelchair, or fetching dropped items. Nothing herein shall limit the rights of persons with disabilities under city, State, and Federal law.