On a recent July morning, Andrew Thompson let Bitty and Bentley, his two Yorkshire terriers outside, just as he had done for years.
They had both been outside for about 5 minutes before Bentley came bolting back in. This behavior wasn’t out of the ordinary for Bentley, who is still a puppy, Andrew said. What was out of the ordinary was the fact that 12-year-old Bitty had not come back with Bentley.
