French Funerary Stele
Similar to modern-day tombstones, funerary steles were once erected to commemorate the dead.
One theory suggests that it was customary for the Romans and Gauls, who buried their dead children with their toys, also to show them with their pets - such as in this stele of a boy called Laetus (c. AD 100).
The pet, in this case a cat, was thought to assist in a safe journey to the afterlife.