Center for Lost Pets– Free national site sponsored by the HSUS to post lost and found pets.
Lost Pet USA– Search tools, resources, and free poster templates.
Lost & Found Pets of WA State– Facebook group for sharing lost and found pets in an effort to reunite.
Nextdoor– Neighborhood social networking/classifieds/lost&found.
Pet Amber Alert– Alerts businesses and registered users of lost animals in their area. ($29.95 and up)
Pet Harbor– Free search of participating shelters and animal rescue organizations.
Missing Pet Partnership – National, nonprofit organization (based in Bellingham, WA) dedicated to reuniting lost companion animals with their owners/guardians
Microchip Lookup Tool (AAHA)– Searches all major microchip databases for registration information.
24 Pet Watch – Microchip information and search site.
American Kennel Club Pet Recovery – Microchip information and search site.
AVID – Microchip information and search site.
Found Animals– National database containing microchip information for all major companies.
HomeAgain – Microchip information and search site.
PetLink – Microchip information and search site.