Through neutering, you can help your dog or cat live a happier, healthier, longer life. Spaying eliminates the constant crying and nervous pacing of a female cat in heat. Spaying a female dog also eliminates the messiness associated with the heat cycle.
Neutering of male dogs and cats can prevent certain undesirable sexual behaviors, such as urine marking, humping, male aggression and the urge to roam. If you have more than one pet in your household, all the pets will generally get along better if they are neutered.
A long-term benefit of spaying and neutering is improved health for both cats and dogs. Spaying females prior to their first heat cycle nearly eliminates the risk of breast cancer and totally prevents uterine infections and uterine cancer. Neutering males prevents testicular cancer and enlargement of the prostate gland, and greatly reduces their risk for perianal tumors.