My Lupine Life (2012)

Louis Pine is convinced he's a genetic werewolf and will transform on the next full moon. His friend Sydney, who thinks she is a vampire, tries to help him. His mom is skeptical and tries to convince him to drop the idea. After Louis fails to transform during a full moon, Seth from Seth on Survival explains that Louis specifically will transform on the dragon moon. Louis becomes skeptical but eventually gets sick and transforms when the dragon moon arrives. His transformation causes Sydney to inadvertently reveal her fangs. Louis runs off into the night in wolf form.