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.
Comment posted Jan 4 2014
I also saw one of these many years ago. The uterus was normal but there were testes where the ovaries should have been.
Comment posted: Jun 22 2013
Saw a very similar pug recently. I sent the reproductive tract for histopathology and he gonads were testes, no ovarian tissue present. The pathologist noted that the dog would be a male pseudohermaphrodite, although I suggested the owner consider her dog to be a female to save confusion.
Comment posted: Jul 11 2012
I had a similar case, also in a Border Collie. We discovered a similar hard protruding structure when she was being prepared for a routine spay. Interestingly, she had what appeared to be one normal ovary, while the other gonad looked like a retained testicle macroscopically. Her uterus was normal in appearance.
Publishing Editor: Arlo Guthrie
Clinical Editor: Alasdair Hotston Moore MA VetMB CertSAC CertVR CertSAS FRCVS
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