290 SECTION II III The Mammals Figure 25-12 • Close-up, caudal abdominal sonogram shows an enlarged, pus-filled uterus just above the urinary bladder. 2/11/2008 11:12:22 AM ch025-A02527.indd 290 ch025-A02527.indd 290 2/11/2008 11:12:22 AM