Neutering a dog is permanent. The sterilization injection will cause the dog’s reproductive organs to shrink, making the dog unable to become pregnant again. However, it will also greatly shorten the dog’s lifespan, so it is not recommended to sterilize the dog. ; If you want to sterilize your dog, it is better to take the dog for sterilization surgery, which is better. Tip: Although sterilization surgery has certain risks, as long as you choose a regular hospital and doctor, do a good pre-operative examination, and pay more attention after the surgery, you can completely avoid accidents.