A biker discovered a Golden Retriever chained to an old bridge at 3 AM, with a note that read, “I can’t afford to put her down. Please don’t let her suffer.”

The dog looked about eight years old. She had a tumor as big as a softball on her belly and was breathing shallowly.Someone had left a bowl of water and her favorite toy—a stuffed duck, worn from years of love. But it was the second note tucked inside her collar that changed everything.

I had parked my bike to …