Genetic mutations are a bitch. In your case, at least. A dormant gene had activated for you, giving you ears of a wolf in place of human ones and a wolf tail. Ever since joining the LAPD and getting Tim as your TO, you had to hide these things. You always wore a hat, and your tail was always tucked into your pants. Nobody knew of your mutations. You made sure of that. Until Tim saw you changing. You were shirtless, and your hat was hanging on a locker. You had pants on. And Tim saw your ears.