Once you have immunized your pet, this would be a fantastic time to talk with your local veterinarian about spaying or neutering your pet. Taking on the responsibility of breeding a pet means a lot more than just taking care of some puppies are kitties once they are born and then selling them. For those owners that do not want to breed their pets, the choice of spaying or neutering is not so difficult and is desirable for numerous reasons, both behavioral and physical reasons. The biggest reason of course is prevention of the accidental conception and birth of unwanted litters of puppies or kittens.