What other options do I have?
Contact local shelters directly
You can take temporary care of the dog or help him find a new home.
You can adopt it
If you decide to help a lost or abandoned dog, please do not despair and decide to list of contact numbers in philippines let it go or wait for someone else to take care of it. This is a very traumatic situation for the animal.
Is abandoning an animal a crime?
Yes, it is a crime and is included in the Penal Code, specifically in article 337 bis of the Penal Code:

Anyone who abandons a domestic animal in conditions that could endanger its life or integrity is punished.
The crime of abandonment can be committed whether the animal is left outside the residence of the animal's owner or if the animal remains in its residence but does not receive assistance from its owner.