For the female dog it means no more male dogs jumping fences, unwanted puppies and no more seasons. Entire female dogs often present later in life with reproductive disorders (eg. mammory cancer or pyometra (infected womb) These problems can be drastically reduced by early neutering.

Male Dogs can make good pets either castrated or entire. For the male dog castration can create a calmer, more serene pet who will have less aggressive tendencies. Dogs that show early signs of aggression should be considered for castration although this will not guarantee correction of the behavioural problem.

Female and Tom Cats that are not pedigree stud cats should all be desexed. The stray cat population and the resultant effect on Australian native wildlife is a problem which with responsible pet ownership can be better controlled. Castrated male cats also smell less, fight less and roam less (hence picking up less infections and reducing the risk of road traffic accidents through roaming).