In Egypt, a decade of excavations at the ancient Red Sea port of Berenice (Berenike) has revealed what some researchers are calling the world’s oldest pet cemetery. Nearly 600 animals, mostly cats, but also dogs and imported monkeys, have been found buried just beyond the walls of what was, almost 2,000 years ago, a bustling port. Many were laid to rest wearing metal or delicately beaded collars, their bodies covered in textiles or ceramics. But were they pets? And is this the oldest known site where humans bid their furry…