This is actually somewhat common... seen once in a while, it is an undescended testicle. At his age, if it has not dropped, the odds are not real good that it will. It is just kind of a freak thing that happens and the male still can be nuetered, although depending on where the testicle is, the vet *might* have to open him. I didn't catch whether there were any breeding plans or not, and I don't know what *common* wisdom on here is, however I will say this: I had a hob I wanted to breed who ended up with an undescended testicles... and when I posed the question, three different vets told me indepenantly under no uncertian terms, I should NEVER even consider breeding him. They said the testicle that is still inside the body will keep the sperm at the wrong tempature and *could* cause deformities. At the very least, it is considered a deformity and can be heridtary. [Posted in FML issue 2955]