Why do neutered dogs live longer? - briefly
Neutering can extend a dog's life by reducing the risk of certain diseases and preventing unwanted behaviors that could lead to accidents or injuries. Additionally, neutered dogs are less likely to roam, which decreases their exposure to potential hazards such as traffic accidents or fights with other animals.
Why do neutered dogs live longer? - in detail
Neutering, or the surgical removal of a dog's reproductive organs, has been shown to extend a dog's lifespan by an average of one to three years. This is primarily due to several interconnected factors that reduce health risks and improve overall well-being.
Firstly, neutering significantly reduces the risk of certain cancers. For male dogs, the most notable benefit is the elimination of testicular cancer, which occurs in about 7% of intact males. Additionally, neutered males have a reduced risk of prostate issues, including enlargement and cancer, which are common in older dogs. In female dogs, spaying before the first heat cycle nearly eliminates the risk of mammary tumors, which are often malignant. Even if spayed after their first heat, the risk is still significantly reduced compared to intact females.
Secondly, neutering can prevent or reduce other health problems. Intact male dogs have a higher incidence of hernias and perianal adenomas, a type of tumor around the anus. Neutered males are also less likely to develop prostatic hypertrophy, which can lead to urinary issues. For female dogs, spaying prevents uterine infections (pyometra), which can be life-threatening if not treated promptly. It also eliminates the risk of ovarian and cystic tumors.
Furthermore, neutering can lead to improved behavior and reduced aggression, particularly in male dogs. Intact males are more likely to exhibit territorial behaviors, such as marking their territory with urine, which can be problematic in a household setting. Neutered males are generally calmer and less prone to aggressive behavior towards other dogs or humans.
Lastly, neutering has a positive impact on population control. Unwanted litters contribute to the overpopulation of dogs, leading to an increase in stray and abandoned animals. By reducing the number of unwanted pregnancies, neutering helps alleviate this issue and contributes to the overall health and well-being of the canine population.
In summary, the longevity benefits of neutering are multifaceted, encompassing reduced cancer risk, prevention of various health issues, improved behavior, and positive effects on population control. These factors collectively contribute to a longer and healthier life for neutered dogs.