This 11mth old B Collie bitch came in because the owner had discovered "something protruding" from her vulva when investigating if she was in season (one of her male dogs had been sniffing around but no other signs were present.)

On examination the protrusion photographed here would appear to be a vestigial penis, complete with Os penis and bulbus penis at its base but no urethral orifice. In all other respects (anatomically and behaviourally, the bitch is female)

This image was first uploaded Oct 15 2010, re-uploaded Nov 26 2018 after site upgrade.