Dogs played a special role in ancient Greek society and mythology; Cerberus guarded the gates of Hades, the goddess Artemis used dogs in her hunt, and Greek citizens employed dogs for hunting and protection. To the ancient Greeks, picking your new pup was an important decision, just as it is today. But, according to Stanford University researcher Adrienne Mayor, writing for Wonders & Marvels, the process could have been just a little bit different. Like moderns, the ancients looked for an adventurous and friendly nature, but one test for selecting the pick of the litter seems rather heartless today. Let...