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. 2010 Dec 20;40(1):19–20. doi: 10.1038/laban0111-19

Figure 1. Close-up image (ventral view) of the tip of a ferret's penis (extruded from the prepuce while the ferret was under anesthesia), showing the two projections of the os penis and the groove between them.

Figure 1

The urethral opening lies on the ventral aspect just proximal to the tip of the penis within the groove created by the two osseous structures (arrow).