You're at the park with your golden retriever, Max. You let him off the leash for a quick run — and in the blink of an eye, he's gone. Your heart sinks. You call his name, but the park is big and noisy. Twenty minutes later, a kind stranger walks up holding Max by his collar, smiling. "I saw his tag and called the number," she says. Just like that, your worst nightmare became a story with a...