First: if you are a volunteer at an SPCA and you suspect that a dog is about to be killed (keep your ears open), quickly take photos and post
THIS DOG IS IN DANGER FROM THE SPCA on brindleweb and on AAS.
Second: if the SPCA steps up the order to kill the dog before any rescuer can buy it, phone Global, CTV and the papers.
Third: walk out with the dog and get it into rescue. Many will hide the dog for you.