I saw a whitish dog with fluffy fur on 28 Sept 10 morning while on my way to work in Jalan Baiduri,Petaling Jaya (near SS 1). The dog was limping when it walks. It was on the side of the road of the 2storey houses when i was driving past. By the time i made a u-turn to search for it, along Jalan Baiduri (a very busy road), i could not spot it. I am not too sure whether it is your dog or not as i wasn't able to see whether it is a he/she. The only thing that prompted me to write is that you mentioned your dog wobbles when it walks. No harm trying to go around the area as some dogs were picked up by passers by to their home and most of the dogs will escape to find their way home. I would suspect the dog to roam into the area of Jalan SS1/27, 1/25, 1/24, 1/29 due to the fact Jalan Baiduri is very heavy in traffic and i don't think the dog would have crossed the road.

some1 found a spitz in ss3, please check below profile:
http://www.petfinder.my/pets/15549/