It is not possible to get a shelter or a home for all of them and the best way to save them from the miseries of everyday torture is to control their population through a neuter/spay program. By neutering/spaying them, we can save them from being unwanted and homeless any further. Dogs do not lament their lost capability to reproduce as they are a different species than ours and reproduce only to ensure the survival of their kind. Besides controlling their population, neutering/spaying has many other advantages. It prevents diseases such as breast or uterine cancer, sepsis and prostate or testicular cancer.
Male dogs are usually better pets if they are neutered. They may have less desire to roam and to mark territory. If they are neutered before sexual maturity, they may be less likely to exert dominance over family members. They may also be healthier pets as they will have no chances of a testicular cancer. The fact that spayed/neutered animals also live longer has been established.
Females also tend to be better pets if they do not experience oestrus every six-to-nine months. Heat cycles bring hormonal changes that can lead to personality changes, and oestrus females must be confined to prevent unwanted pregnancies.