No,
That would be something to look at more for cryptorchidism alone. Even if your colt had both testicles descended. If the measurements of the testicles were outside of expected norms for size, either too large, or too small, you would look at cryptorchidism first, I would. It is well known that cryptorchid horses have one descended testicle that is larger than normal in size, when measured. And that the retained testicle is smaller than normal in size when it is removed.
There are known dwarfism in humans that see cryptorchidism, but that is when the human is a dwarf, not a normal human and being crypt. A normal human and being crypt would be looked at as a cryptorchid first not a dwarf or a carrier first. I assume your horse is normal and not a dwarf.
John
