Answer by  
                                                                                          katrescuer (431)
                                                            
                          
                          
                                                          In order to answer that question, you would need to know how the neutering procedure works. When a dog or a cat is neutered the vet removes their testicles, therefore, it would be impossible to have a neutered dog or cat that previously had been neutered, unneutered. You can not replace their testicles once they have been removed.