Oblivion by Kiki Burrelli

Dog might not be able to shift from four legs to two, but from the moment Faust rescued him as a puppy, he’s been a vital member of the Royal Paynes pack. He’s a dog named Dog, but he’s also a friend, packmate, and confidant.
That is how Dog finds himself stalking the mysterious wraiths in the dead of night. Made of soul and spawned from hell, they’ve been obsessed with Dog from first sight. When Dog spots the wraiths sneaking through the woods, he vows to discover why.
He could never imagine the frozen landscape that waits. In a world of dark and light, good and evil, what happens when two beings, never meant to experience love, find solace in one another?

Oblivion: Soul Warriors of Royal Paynes is a 13k word short story that takes place in the Wolves of World. It should be read prior to reading, Pride: Wolves of Resurrection Road, and before or after, Diabolical: Demon of Royal Paynes.