A stallion with one or both testicles retained in the abdomen. For more information: Cryptorchidism in the Horse
An adult male cat whose testicles have not descended into the scrotal sac. This is a disqualification in all associations.
A "unilateral cryptorchid" is a male horse of any age that has one testicle undescended. A "bilateral cryptorchid" is a male horse of any age that has both testicles undescended. The Jockey Club defines "cryptorchid" as a male horse of any age that has both testicles undescended.
A male dog with neither testicle visible
a male sheep that has its testes pushed into its kidney cavity to have infertility but with increased production of lean meat due to testosterone.
A male cat with both testicles not descended.
a male sheep with no descended testicles, with them both being retained internally.
The adult whose testicles are abnormally retained in the abdominal cavity. Bilateral cryptorchidism involves both sides, that is, neither testicle has descended into the scrotum. Unilateral cryptorchidism involves one side only; that is, one testicle is retained or hidden, and one descended.
A male cat whose testicles have not descended.
