For two months, a California couple was heartbroken, worrying about the whereabouts of their beloved cat after losing him in Yellowstone national park, a wilderness larger than some US states. But as summer came to a close, so did their tragic story. Benny and Susanne Anguiano reunited with their lost feline Rayne Beau last month after an animal welfare group called to let them know their cat had been found in Roseville, California, about 800 miles (1,287km) from Yellowstone. In early August, Rayne Beau’s microchip came in handy. The couple received a message from Pet Watch, a pet-tracking service, indicating...