When I lived in Taipei (3 months ago), there was a “dog van” about 1 block up from the Yuan Shan MRT St. I had no idea what to do about it when I lived there, and called a few places to report it, but no action was ever taken 
It was an old white van (sometimes 2 vans were there) with dogs chained up inside. I passed it everyday for work and would often stop and bring the dogs bones and treats and check on them. There was always at least 3 dogs and as many as 6 chained (and locked) inside. Always 2 german shepards, a husky, and usually a basset hound, along with others present.
Apparently, after some sleuthing, I found out that a man “owns” these dogs and keeps them there because his house is too small for so many dogs, and this way, they are not taken in to the animal shelters. I also heard that he has these dog vans all over the city.
He feeds them and gives them water…but, they only get let off the chains at most twice a day and just to go to the bathroom. The rest off the day, they sit in th van, cramped in there in the heat. Their water is often spilled, their leg muscles weak, and often have to lay near where they have to go to bathroom.
I was just wondering if these dogs are still there and if anything can be done about it???