Sheep's Clothing by Mike Harris

Cassandra Everson is spiraling. Her life is the epitome of "just getting by". Her job? Unfulfilling. Her sister? Overbearing. Her boyfriend? Well-meaning, but she just isn't that into him. But after an attack by her neighbors' so-called service dog awakens something primal within her, Cassandra discovers the monster that has always been inside. And she is hungry.

As her cravings grow harder to control, so do her urges. Sex and violence blur in a savage, erotically charged descent into lycanthropy. As the bodies pile up and the mask slips, Cassandra realizes that there may be no going back.