- Reduced risk of getting cancer or other diseases of the reproductive organs, such as testicular cancer, prostate cancer/disorders in males, and cystic ovaries, ovarian tumors, acute uterine infections and breast cancer in females, and also other diseases like mammary cancer, perianal tumors and perianal hamias.
- Females can suffer from physical and nutritional exhaustion if continually breeding.
- Pets generally live longer and healthier lives.
- Pets are less prone to wander, fight, and are less likely to get lost or injured.
- Reduces territorial behaviour such as spraying indoors.
- Less likely to suffer from anti-social behaviors. They become more affectionate and become better companions.
- Eliminates "heat" cycles in female cats and their efforts to get outside in search for a mate.
- Eliminates male dogs' urge to "mount" people's legs.
- Reduces the cost to the community of having to care for unwanted puppies and kittens in pounds and shelters.
- No additional food or vet bills for the offspring.
- No need to find homes for unwanted or unexpected litters of puppies or kittens.
- Save money from expensive surgeries from car accidents or fights, which are less likely to occur if your pet doesn't roam around.
- Dumping puppies and kittens is an ethical cost, as well as being illegal and inhumane.
- The price of desexing is more affordable to those in financial need with the assistance of organisations such as NDN.