A 2 year old, intact male mixed breed SPCA dog presented for recurrent, non painful accumulation of fluid in the prepuce and phimosis. Surgical exploration revealed a stenotic prepucial orifice and adhesions of the visceral penile mucosa to the parietal prepucial mucosa circumferentially around the prepucial orifice. Additional adhesions were present dorsally and caudally along the penis. Extensive adhesion resection and prepucial reconstruction was performed in order to attain a more normally functioning penis. This seminar will focus on the definition and etiologies of phimosis, and will provide an explanation of the diagnosis, management, and surgical considerations regarding this condition.