"Just as with its distant cousin the owlbear, speculation abounds as to the origins of the bear-owl. Some claim it was a wizard’s spell gone awry. Others claim an aberrant pack of owlbears became mutated by strange energies. Others still hold that the monstrous Demogorgon, centuries removed from his last horrid experiments that resulted in various hybrid beasts, decided to unleash the bear-owl on the world as a cruel joke. A scattered few deny their existence, saying it’s just an old tale meant to scare children into behaving properly...
This short supplement provides a new creature for you to incorporate into your 5th edition games. Included in the PDF is an origin story for the creatures that can be used as a plot hook, various details on the habits of bear-owls, advice on tactics they use in combat, a rumor table for areas with bear-owls, and stat blocks for three variants of the creature: the baby bear-owl, adult bear-owl and bear-owl matriarch."
(Author Summary)