Only neutered on male dogs

Veterinary practice Gettorf
Dr. Otten & Roth
  • Calibration coupling 8
  • 24214 Gettorf
  • Tel small animals:
    04346 - 6008033
    Tel large animals:
    04346 - 6008188
  • Fax:
    04346 - 3416

Castration of the male dog


Castration is the surgical removal of both testicles. Through this intervention, the male dog is rendered impotent.


Males are primarily neutered to counteract unwanted, gender-related behavior. Often, the desire to render sterility only comes second - mostly when male and female animals live in the same household.

Another reason for castration is the white, slimy discharge from the foreskin that occurs in every intact male. Although this discharge is called "preputial catarrh", it is to be assessed as a completely normal phenomenon. There are great individual differences in the amount of fluid secreted. Excessive production is a hygienic problem for many owners. Flushing is only a short-term success, which is why some owners choose castration. After that, the discharge stops within a few days. Medical reasons for castration can include changes in the testicles and prostate (e.g. enlargement, inflammation or cysts). Testicles that have not descended (cryptorchids) must also be removed early because the risk of developing malignant testicular tumors is otherwise very high.


In males, the timing of the operation is less important than in bitches. Males are often castrated only when they are fully grown, because only then is the sexual behavior perceived as annoying fully developed and should now be switched off. Basically, the later the operation, the lower the effect of castration on behavior. In contrast to the bitch, castration in males can affect skeletal growth. If neutered before sexual maturity, bone growth will take longer and the male will grow slightly larger.


With castration, an irreversible elimination of the sexual function is achieved. Most of the time, however, it is not fertility but rather aggressive behavior that is the reason for castration. In this context, it is important to differentiate between the various types of aggression, because not all of them are equally influenced by castration. For example, castration has no effect on the aggressiveness in connection with food or on the aggressiveness due to fear. Conflicts and fights with male conspecifics, on the other hand, can be more or less avoided by castration, whereby the age of the male at the time of the operation is of great importance. The older the male is at the castration and the longer he has already practiced his showing off, the less successful the castration will be.

As mentioned above, the discharge from the foreskin stops completely after the castration.

Possible drawbacks

In males, too, castration leads to an increased appetite in some animals. Failure to consistently pay attention to needs-based feeding and sufficient exercise can lead to obesity.
In contrast to the bitch, castration in males can affect skeletal growth. In the case of castration before reaching sexual maturity, the bone growth then takes a little longer and the male becomes slightly larger. In the case of spaniels, long-haired dachshunds and Irish setter males, the quality of the fur is impaired by castration in the same way, but less often than in the bitches. In some cases the wool hair may grow excessively and a "puppy fur" may develop.

As a consequence of castration, incontinence (dripping urine) is very rare in males. The involuntary loss of urine occurs particularly while sleeping and lying down. Large breed neutered males are affected slightly more often than small breeds. Drug treatment is possible, but not always successful.

Other risks related to castration

In addition to the possible side effects mentioned above, every castration, like any other operation, also involves the risk of anesthesia and surgery.

What is the anesthetic risk?

Modern, gentle anesthetics have made anesthesia much safer for our animals too. Nevertheless, any anesthesia can lead to unexpected life-threatening incidents which, in the worst case, can lead to the death of the animal. These incidents can also occur in completely healthy animals. However, they are more likely when the risk of anesthesia is increased. Factors that influence the risk of anesthesia are, for example, heart disease, very old age, liver and kidney diseases and other pre-existing conditions. The individual risk of anesthesia is determined and discussed anew for each patient and each anesthesia. Whether further examinations such as blood tests, X-rays or ultrasound examinations are necessary for your animal will be clarified during the preliminary examination.

What is the surgical risk?

Any operation can lead to complications in the course of healing. This can be secondary bleeding, wound swelling, wound healing disorders, infections or intolerance reactions to medication or sutures. The surgical risk is different for every dog ​​and every operation.

If you have any questions on this topic, please contact us, we will be happy to advise you in detail.