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Desexing and Microchipping

Title: Desexing and Microchipping



New laws from 1 July 2018.

South Australia will soon have new laws for pet dogs. From 1 July 2018, all dogs born after this date must be desexed by six months of age. This new rule will reduce the number of unwanted litters, and help reduce aggression.

You can get a desexing deferment to allow large breeds to fully develop, and there’s exemptions for working livestock dogs, and dogs belonging to registered breeders.

These new desexing rules apply to cats, too.

Every dog can bite - Desexing reduces this risk

In South Australia, the number of dog bites reported to councils is rising. Studies have shown there is a link between desexing and reduced aggression, with desexed dogs up to nine times less likely to bite than those that are entire.

You can read about a recent study into the links between desexing and reduced aggression here

Desexing: the overlooked way to reduce dog attacks

In South Australia last year:

  • 5 people a day were attacked or harassed by a dog
  • 4 dogs or other animals a day were attacked or harassed by a dog
  • 1 person everyday was treated in an emergency department
  • 1 person every two days was hospitalised – mostly children

Good reasons for desexing your dog:

  • Reduced aggression – towards people and other dogs
  • No unwanted litters of puppies
  • Healthier dogs – reduced risk of cancer and other diseases of the reproductive organs
  • Dogs generally live longer, happier lives
  • Less likely to suffer from anti-social behaviours ie leg mounting (humping)
  • Reduces territorial behaviour
  • Reduces the urge to wander
  • Reduces vet bills
  • Discounted dog registration



From 1 July 2018, new laws also mean your dog must also be microchipped.

What is a microchip?

A microchip is a tiny electronic chip approximately the size of a rice grain which has a unique identification number.  The microchip will last for the life of the animal and it is inserted under the skin at the back of the animals neck by a trained practitioner.  The microchip number is the link to the owner’s contact details which are held on a registry database.

Microchipping your cat and dog will make it easier for your council, animal shelter or vet to quickly reunite you with your pet in the event that your pet becomes lost.

It is important that you remember to update your microchip details if you move house or change contact details.

Click here to download the Dog and Cat Management Board's fact sheet on Dogs & Microchips

For more information visit Microchips Australia