MONROE - The Monroe Police Department is reminding pet owners their animals must be on a leash or contained by a fence when outside.Pet owners could face about a $175 fine for each time a pet is not kept contained, according to news release from Police Chief Fred Kelley.Numerous incidents could result in city action to stop the nuisance. An at-large pet could be picked up as a stray and possibly rescued by the Green County Humane Society. The owner could then face a fee to reclaim the pet.City codes require pet owners to have their pets on a leash or some type of reasonable control when walking them.