Flesh and Bone by Arden Powell

One month ago, Everett did something unforgivable. Now, he and his partner Marshall are paying the price. As they drive their cattle west to a ranch in the foothills of the Rocky Mountains, something stalks them under the light of the full moon.

Haunted by a lifetime of shame, Everett’s guilt over what he did with Marshall is coming to eat him alive. Equally dangerous is the monster following him, which will sink its teeth into anything and anyone. After it gores Everett, he begins to feel that same awful hunger for himself. If Everett wants to survive the night, it’s not only the monster he needs to fight. It’s his own bloodthirsty urges that want to tear him apart. Worse, they’ll tear Marshall apart just as easily.
Marshall would do anything for Everett: his best friend, and the man he has secretly loved for years. Now, he doesn’t just have to save Everett from the creature hunting them. He has to save Everett from himself, and that might mean putting a bullet through Everett’s skull before the man he loves becomes something unrecognizably monstrous.

Flesh and Bone is a short, standalone mm horror-romance novella of approximately 14,000 words, set in the Canadian Wild West of 1889.