Dorsal view of pelvic genitalia of a yearling dairy bull, showing the seminal vesicles located on each side of the ampullae, the prostate at the distal end of the ampullae, the urinary bladder, and the origin of the pelvic urethra. The seminal vesicles were moderately enlarged in this bull and fibrotic on rectal palpation, consistent with a clinical diagnosis of vesiculitis.