Many people believe that by taking away from their pets the ability to make love is a  civilised action, because no puppies will be born, so no puppies will not be killed in roads.
But it is not a civilised action. Why? Because it is more violent to take away from a being the chance to live, before it is born to fight for it! A female dog can born at least 40 puppies in a year. From the 40 puppies some will survive (perhaps 5 or 10). If someone sterilises his/her pet, then he or she will became a murderer. Nothing more than a cruel, brutal and unscrupulous murderer. Fight against this brutal action!