Originally Posted by CLaPorte432
Crypts are unable to reproduce. Ever. The testicles are in the horses body, which is too hot temperature wise to produce viable sperm. One testicle must be descended in order to reproduce successfully.
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Well... you're right in your last sentence. But that's it. Monorchid & cryptorchid stallions reproduce regularly. As you said correctly: One down is all it takes...
Matter of fact... in the world of racing thoroughbreds cryptorchidism is not uncommon and not considered disadvantageous by many breeders, owners and veterinarians; surgery is performed regularly and inexpensively to prevent risk of metastasis in event of tumor formation.
The behavioral characteristics of the stallion (to some) as well as the fact that with just one down the horse runs less impeded (many TB's are gelded due to diminished mobility at the rear quarters) are sought by many the breeder/trainer. Research indicates a potential of 1.5% 20 2% of all cryptorchid stallions of any breed suffer from anything other than too much attentionand controversy during normal lifespans, reproduce regularly with no significant indication of irregular male progeny and may be easy keepers to boot... Cowboy.