Cryptorchidism in Goats

Cryptorchidism is a reproductive condition in which one or both testicles fail to descend into the scrotum. In goats, it is considered uncommon, but it is important enough that a breeding soundness exam in young bucks should include confirming that both testicles have descended completely. A retained testicle may stay in the abdomen or in the inguinal canal instead of reaching the scrotum.

This matters because the scrotum keeps the testicles cooler than the rest of the body. When a testicle stays inside the body, that warmer temperature can interfere with normal sperm production. A buck with one retained testicle may still be fertile because the descended testicle can still produce sperm, while a buck with both testicles retained is more likely to be sterile. Even so, retained testicular tissue can still produce male hormones, so affected goats may continue to act like intact bucks.

For many pet parents and small-ruminant caretakers, the first clue is simple: the scrotum looks uneven or one side feels empty. Some goats never show any other outward signs. Others are only identified during a pre-breeding exam, castration planning, or workup for unexpected breeding behavior after a goat was thought to be castrated.

Cryptorchidism happens when the normal descent of the testicle from the abdomen into the scrotum does not finish. Across domestic animals, this condition is linked to a mix of genetic, epigenetic, and environmental influences. In practical terms, heredity is an important concern, which is why affected males are generally not considered good breeding candidates.

In goats specifically, published veterinary references describe cryptorchidism as rare, but they still recommend checking for it during reproductive exams in young bucks. Because the condition can be inherited, many vets advise against using a cryptorchid buck for breeding, even if he appears otherwise healthy and fertile.

Nothing a pet parent does during routine care causes a retained testicle after birth. This is a developmental problem that occurs before or around the time the testicles should descend. It is not caused by diet, housing, or normal handling.

Diagnosis starts with a careful physical exam. Your vet will palpate the scrotum to confirm whether both testicles are present and may also feel the groin area to look for an inguinal retained testicle. In many goats, that exam is enough to strongly suspect cryptorchidism.

If the missing testicle cannot be felt, your vet may recommend ultrasound to look in the inguinal region or abdomen. Merck notes that undescended testicles in domestic animals can be identified with transabdominal or transrectal ultrasonography, depending on species and size. In goats, abdominal ultrasound is the more practical field option in many cases.

Diagnosis can become more complicated if a goat was previously thought to be castrated but still acts like an intact buck. In that situation, your vet may combine history, physical exam, and imaging to look for retained testicular tissue. The exact plan depends on the goat's age, size, intended use, and whether surgery is being considered.

You cannot prevent cryptorchidism in an individual kid once the developmental problem has occurred, but you can reduce the chance of passing it along in a herd. The most practical prevention step is breeding management. Bucks with cryptorchidism, and often their close relatives depending on herd goals, should be discussed carefully with your vet before being used for breeding.

Routine reproductive exams also help. In young breeding bucks, your vet should confirm that both testicles have descended completely before the animal is kept as a sire. That is especially important in herds where replacement males are selected early.

If a goat is being kept as a companion, wether, or non-breeding animal, early identification still matters. It helps avoid accidental breeding, explains persistent buck behavior, and allows your vet to plan the safest timing and approach for surgery if removal of retained testicular tissue is recommended.