Taiwan and CNR according to Sean McCormack, Founder of Animals Taiwan
What this country does need is more stray dogs that have been vaccinated and neutered. By removing stray dogs from their environment, you are opening up that space and all its resources (food, shelter, etc.) to dogs in the surrounding area that couldn't move in while the other dogs were there.
Those dogs then have more pups because the resources can support it, and the stray problem has just increased, because now you have the original dogs in the shelter waiting to die and a new bunch of pups filling their place 'on the street'.
But by neutering those original dogs and returning them, the area will remain inabited by animals that can't breed, no pups will be born, the population levels off, and the number of dogs going into the shelter decreases, as does the number being euthanized.
This system has been found to be the only solution to the problem. The population levels off once you've neutered 67 percent, and then it starts to reduce slowly and naturally. This gives you time to CNR all the other dogs in the area, and so on, and so on.
By removing known dogs from the street you are opening it up to unknown animals, be they dogs, cats, rats, or whatever. Leave the known dogs be, vaccinated and neutered, and you are controling the population in the most humane and sensible way.
