1. Reduce Disease: Neutering a dog can actually prevent many diseases, such as sexually transmitted diseases, prostate cysts, and uterine diseases. 2. Reduce the Chance of Losing Your Dogs: Dogs in estrus will be more like to go out to find their mating. And the chance of getting lost is relatively high. But neutering will reduce this responsiblity of getting lost. 3. Reduce Troubles During Menstrual Period: There gonna have blood come out from dogs’ private parts in estrus. If you don’t pay attention, there will be blood stains everywhere in your house, which is hard to clean. Neutering can solve this trouble. 4. Control Fertility: If you let the dog breed freely, the number of homeless dogs will increase accordingly. Many newborn puppies which are not properly handled will be homelesswill or end up with dead. Therefore, neutering can effectively reduce the number of stray dogs. 5. Improve Their Behavior: Dogs after neutering do not only focus on mating, but will be more closer to you and like interacting with you.