Las Vegas is considering requiring pet owners to spay or neuter their cats and dogs.

The proposal is being made in response to a growing number of feral animals.

As proposed, the ordinance would require dogs and cats over 4 months old to be spayed or neutered, with certain exceptions. A veterinarian could certify that a pet was incapable of breeding or medically unfit for the operation.

The requirement wouldn't apply to service animals, law enforcement and rescue animals, or those belonging to someone holding a dog or cat fancier's permit, a breeder's permit or a professional animal handler permit.

For enforcement purposes, the ordinance would require pet shops to submit lists of dogs and cats sold each quarter.

(Copyright 2009 by The Associated Press. All Rights Reserved.)