Plain radiograph of the caudal abdomen of a male goat with obstructive urolithiasis. Multiple radiopaque urinary calculi in the urinary bladder (dotted circle), along the pelvic and sigmoid flexure (arrowheads indicate beginning and end of the urolith line) and in the distal part of the urethra (arrow). Courtesy of the Radiology Unit of the Vetsuisse Faculty, University of Bern