Use common sense to determine if he or she is genuinely homeless and in need of rescue, or is a neighborhood pet... out for an unauthorized walk in the park!
Is the dog well cared for?
If the animal appears healthy, well-groomed and approachable - chances are he or she is merely lost and not abandoned. If it is friendly, you can take him or her in and help find the guardian.
If the animal is thin, with a matted and dirty coat or it appears injured -- it has very likely been lost for a long time or abandoned. (It is very unusual for a dog to become feral.) If the pet is approachable, try to catch it and take it to an animal shelter or vet clinic for medical treatment.
Check for pet identification
A collar and tags are obvious forms of pet ID. But many pets also have tattoos and/or microchips. You can take the pet to a vet clinic and they will help you check for tattoos or microchips.
Whether the dog has any identification or not, you can still register it with PetLynx!
PetLynx has a special program called AutoMatch
Know Your Neighbours
Remember that most animals that are lost, belong in the neighbourhood where they are wandering. Their guardians are probably frantically looking for them. Taking the animal to your local animal shelter is an option, but moving the animal from the neighbourhood reduces the chances that the pet will be reunited with its guardian. At least for a couple of days -- if you are able -- try to find the guardian yourself.
