Residents have been leaving food out for Charlie for years. They've tried to bring him indoors to safety, but he's always evaded them. Last week they noticed that Charlie seemed slower than usual, and weak.
Denise Lauffer, a dog walker who has been living in the neighborhood since 1994, took extreme measures to gain Charlie's trust. She built him a shelter and made him a bed, local news site DNAInfo reported. Then she slept there with him for two nights, while the temperature in New York City hovered around zero degrees.
"I was able to line the bottom of his bed with hand warmers...He loved it," Lauffer told DNAinfo.