'Cause Who Knows What Technology Will Let You Find...?

Instructions: Using Francis's DogHouse to Reunite Lost/Stolen Dogs and their Families

General Resources

FidoFinder
1-888-pets911
Dog-O-Mania Lost & Found
Metro Pet Tracker
USDA's Missing Pet Network(MPN)(By State)
Dog Gone Locate
Flealess Market's Lost Pets Int'l (USA/Canada)
Petfinders Lost Pet Database (USA/Canada)
The Pet Page (USA)
AcmePet Classifieds
Missing Pets Page
Pet Channel's Find-A Pet
The Lost and Found Pet Pages
Internet Lost and Found
Petznjam
K9 Finder
DogFind
FindFido
PetFinder
PetFind USA

Services to Help You

Sherlock Bones "Tracer of Missing Pets"
Petfinders
Lisa Messmer's Tips on Finding Lost and Stolen Pets

Resources/Tips by State 
(Other than MPN sites)

Western US 

K9 Haven (SF/Bay Area)
Pet Network (Saratoga, CA)
Lost Pet Info (San Luis Obispo)
FreePlay Lost and Found (LA)
MetroPetTracker (LA)
PAWS (Seattle)
Lost and Found Pets(Corvallis, OR)
Hugs for Homeless Animals (OR &other areas)
PetBond (So. Cal.)

Other US

Denver Dumb Friends League
Lost Paws (Co. Springs)
Canine Connections (Boston)
Goldie's PetNet (Tulsa)
Lewis & Clark Humane Society (Helena, MT)
Animal Control (Lincoln, NE)
Champaign County Humane Society (IL)
Southampton Animal Control (NY)
Connecticut Humane Society
Humane Society of Cobb County (Marietta, GA)
Maryland Lost Pet Info
Parkersburg, WV
Lost Paws - (VA)
 

International

Animal Sans Logis (Belgium)--in French
Interdog (Israel)
Lost and Stolen Dogs (UK)
Quebec
Canada MPN
Sweden MPN
Netherlands MPN