February 5, 2026, 9:49 am | Read time: 6 minutes

Neutering as a Responsible Standard Solution?

The question of neutering dogs is no longer purely medical. It touches on ethical, societal, and biological levels alike. For decades, neutering was promoted as a responsible standard solution to prevent unwanted reproduction, make dogs “easier,” and relieve animal shelters.

But this view is increasingly being questioned. Current scientific findings show that blanket neutering does not do justice to the complex nature of dogs and in many cases does more harm than good.

Blanket Neutering Deeply Interferes with Dogs’ Biological Processes

We often overlook that sex hormones fulfill far more functions than mere reproduction. Testosterone, estrogen, and progesterone are central control elements of the body. They influence bone growth, muscle development, metabolism, the immune system, and the maturation of the nervous system. When a dog is neutered, these biological processes are deeply interfered with.

Especially in young dogs, whose physical and mental development is not yet complete, this intervention can have far-reaching consequences. Studies show that the absence of hormones delays the closure of growth plates, significantly increasing the risk of joint diseases and orthopedic problems.

Risks of Neutering Dogs

Neutering is not a risk-free procedure health-wise either. While a reduced risk of certain types of tumors is often cited, the risk of other diseases increases at the same time. These include cruciate ligament tears, thyroid diseases, certain cancers, urinary incontinence in females, and a significantly increased risk of obesity.

The altered hormone balance lowers the dog’s energy needs, which can quickly lead to obesity if feeding remains unchanged. Obesity, in turn, promotes cardiovascular diseases, diabetes, and joint problems and has a massive impact on quality of life.

Neutering Does Not Change “Bad” Behavior

A particularly persistent myth is the assumption that neutering automatically leads to better behavior. In fact, many problematic behaviors are not hormonally based. Aggression, fear, insecurity, or excessive barking often arise from bad experiences, lack of socialization, or improper training.

In such cases, neutering may be ineffective or even worsen behavior. Studies show that neutered dogs may react more fearfully or stressfully in some situations than intact animals. Especially in insecure dogs, sex hormones can have a stabilizing effect, and their absence can exacerbate existing problems.

Blanket Neutering Does Not Do Justice to the Diversity of Dogs

Another important point is the different effects of neutering depending on breed and body size. Large dog breeds are in the growth phase significantly longer than small dogs and react more sensitively to early hormonal interventions.

A uniform recommendation for all dogs ignores these differences and does not do justice to biological diversity. What may be unproblematic for a small dog can pose significant health risks for a large dog.

Neutering Cannot Be Reversed

Besides the medical and behavioral aspects, the ethical dimension also plays an important role. Neutering is a surgical procedure under general anesthesia, in which the veterinarian permanently removes healthy organs. It cannot be reversed and changes the dog’s body for life.

If there is no medical necessity, the question arises whether such a procedure is justified. In a time when we increasingly recognize animals as sentient individuals with their own needs, the routine removal of healthy organs seems contradictory.

Blanket Neutering for Dogs from Animal Welfare?

Blanket neutering is often defended with the argument of animal welfare, particularly for controlling the dog population. However, this argument falls short. Studies suggest that high neutering rates do not automatically lead to fewer dogs in shelters. The causes of overcrowded shelters lie more in a lack of education, uncontrolled trade, illegal breeding, and a lack of responsibility among individuals. Responsible dog owners are quite capable of preventing reproduction through management, supervision, and leash control without resorting to an irreversible surgical procedure.

Alternatives to Neutering Dogs

Modern veterinary medicine now offers alternatives to surgical neutering. Reversible methods such as chemical neutering using a hormone chip allow the effects of hormonal changes to be tested temporarily. This way, it can be assessed whether behavior or health aspects actually improve without making an immediate final decision. Closer collaboration between veterinarians, dog trainers, and owners also helps find individual solutions that do not rely on blanket interventions.

More on the topic

Expert Clarifies Do Dogs Really Suffer if They Don’t Have Sex?

Veterinary medicine What is the difference between castration and sterilization?

Careful Consideration Instead of a Standard Solution

Society’s view of dogs has changed significantly in recent years. Dogs are now more perceived as individual beings and less as animals that should function as smoothly as possible. This changed attitude also requires a rethinking in veterinary practice.

Instead of standard solutions, time, education, and careful consideration of all pros and cons are needed. The decision for or against neutering should always be tailored to the individual dog and not based on general recommendations.

Conclusion: Always an Individual Decision

In summary, blanket neutering of dogs no longer aligns with the current state of science and ethics. It can be sensible or necessary in certain cases, such as with clear medical indications or severe, hormonally induced suffering.

As a general measure, however, it is too undifferentiated and carries significant risks. An individual assessment that considers the dog’s age, breed, health, behavior, and living conditions is the more responsible approach. Moving away from blanket solutions opens up the possibility of accompanying dogs more respectfully, consciously, and in a way that does justice to their nature.

An interview with dog trainer Katharina Marioth on the topic can be seen in the video.