List brokers who sell lists of homes within a one-to-two-mile radius in any U.S. city and will deliver pre-addressed post cards with a pet description and photograph, ready to stamp and mail, to the owner. http://www.petfind-usa.com/
Free service of the Dutchess County SPCA (DCSPCA) of Hyde Park, Dutchess County, New York. Provides database of lost and found pets and offers tips on lost pet prevention and recovery. http://lostfoundpets.com/
Internet based non-profit organization dedicated to reuniting lost pets with their owners in the United States and Canada. Offers advice on what to do if you lose or find a pet. http://www.operationkona.org/
Free Chicago-based service provides information and photos for lost and found dogs and cats. Accepts local listings only. http://www.missingpetcenter.com/
Lost and found database, helping reunite pets with their respective owners. Serving the Pacific Northwest. Site also offers tips on finding a lost pet. http://www.lostpetnet.com/
Contains the option to add a description of lost and found dogs in the United Kingdom. Also features advice on how to protect your dog and what to do if it is missing. http://www.lostdogsuk.com/
Provides free lost and found listings for the Chester, New Jersey area. Includes tips for preventing pets from becoming lost and resources for finding them if they do. http://www.chesterlostpets.org/