Just saw this. SOSD (something like SPCA for dogs) is organizing an adoption drive tomorrow 22 Oct Sunday. So if you are interested to see the dogs and perhaps adopt one, you are free to attend (above One-North MRT Station).
I read on their Facebook that they are facing some problems due to too many stray dogs, their “enclosures are all full; we do not even have space in our quarantine unit to house any more dogs”.
They also do have dogs suitable for HDB, under this project called Project ADORE. If more dog lovers adopt instead of buy, the problem of stray dogs in Singapore can be solved humanely.