Canine Male Reproductive Disorders
Cryptorchidism means that neither testicle of the dog has descended. A dog with this condition is generally sterile because the undescended testicles have never developed or else bodily heat has destroyed the reproductive cells of the testicles. Otherwise, your dog is unimpaired - he simply cannot reproduce. This is an abnormal condition and these undescended testicles should be removed, for tumors may develop in them.
Disease of Genital Organs
Injuries to the testicles are rare, but occasionally they do occur and the testicles may become infected. If our dog has a serious laceration in the area, bacteria may enter, followed shortly after by an infection. There can be severe pain, and your dog will walk with his hind legs spread at an unnatural angle, with a stiff gait. The testicles themselves may become enlarged, a condition that is called orchitis. To relieve his pain temporarily, give him half an aspirin, either alone or mixed in his food, but call in veterinarian to treat the infection without delay.
Injuries to the penis are also rare. most of the time injury will respond to first aid treatment. There are a few ailments to which the penis is subject, except perhaps for tumors, and these too are rare. some males have congenital defects, such as having too small a sheath to allow the penis to come through for purposes of mating, a condition known as phimosis. Surgery can correct the fault.
Another defect may be that the dog's penis extends beyond the sheath and cannot be retracted, a condition known as paraphimosis. Both of these conditions are painful, and there is little you can dog except divert his attention until you can get professional help. Fortunately, both conditions are rare.
Monorchidism means that only one testicle has descended into the scrotum. The condition is hereditary, and there is nothing you can do about it without professional help. Such a dog is not necessarily sterile, and he may pass on the defect to the male puppies in any litter.
The undescended testicle will generally give trouble, and your veterinarian should be consulted on what course to take. If there is a tumor, the testicle may grow to the size of a grapefruit, and emergency surgery will be needed. Many times an operation is performed to remove the testicle before it gives trouble, and in some cases hormones help the testicle descend.
The prostate gland may be enlarged, especially in the older dog through either infection or hormonal imbalance. The resulting condition is prostatitis.
As long as the gland remains normal, it serves its function in the reproductive system. When it swells or becomes inflamed, however, it compresses the rectum. The result is pain during defecation, and constipation. Other symptoms may include a reluctance on the part of the dog to sit down, because the whole area is sensitive. The dog may walk with a straddled gait, like an old man.
If there is an infection, there may be a rise in temperature. The dog will be restless, ill at ease, and generally unhappy. If you do nothing to relieve his condition, the dog may not have a bowel movement because the area is so sensitive.
The whole matter must be handled by a veterinarian. When the prostate is so large that massage and hormones will not work, surgery may be necessary. This is a very serious operation with a long recovery period. Consultation is suggested.