Reasons to Desex Your Pet | Altona Vet

You can help your pet community by desexing your pet!

250,000 perfectly healthy animals are put down annually in Australia because there are not enough homes for them. We are now facing an oversupply of animals and it is heartbreaking to think that they will be put down. This oversupply proves the importance of desexing your animals.

Misconceptions and myths about desexing have led pet owners to avoid this procedure. However, the benefits of desexing far outweigh the negatives.

Here are the facts...

Reduction in the risk of developing cancers

  • Mammary tumours (breast cancers) are more common in female dogs that are either not desexed or that were desexed over the age of 2 years
  • The risk of a female dog developing a mammary tumour is around 0.5% if they are desexed before their first heat (approximately 6 months of age), around 8% after their first heat, and around 26% after their second heat
  • Mammary tumours are fatal in around 50% of dogs
  • Cats desexed before 6 months of age have a 7-times-reduced risk of developing mammary cancer, and desexing at any age reduces the risk of developing mammary tumours by around 40-60%
  • Mammary tumours are fatal in around 90% of cats
  • Desexing male dogs and cats eliminates the development of testicular cancers
  • It is especially important to desex male dogs and cats if one or both testicles have not descended into the scrotum by the time your pet is 12 months old. Testicles that are retained inside the abdomen are at a temperature higher than they should be which makes them much more likely to become cancerous

Eliminating the risk of pyometras (infection in the uterus)

  • This is a secondary infection that occurs as a result of hormonal changes in the female dog and cat’s reproductive tract. It can be a life-threatening condition, and requires intensive and often prolonged veterinary care and emergency surgery to remove the infected uterus (which is both costly for the owner and puts your fur friend through unnecessary suffering)

Unwanted pregnancies

  • On average, dogs are able to produce 2 litters a year, and on average each litter can be 6-10 puppies in size
  • Dogs can go into heat and get pregnant during their first heat
  • On average, cats are able to produce 3 litters a year, and on average each litter can be between 4-6 kittens
  • Cats can go into heat and get pregnant during their first heat, which can be as early as 4 months old

Behaviour benefits

  • Desexing does not change your pet’s behaviour completely as many people think! By desexing only hormone-driven behaviours are reduced – for example roaming, aggression and marking
  • For exmaple, male dogs and cats urinating in the house; cats not getting into fights and acquiring nasty cat bite abscesses as result of being territorial

Weight change myths

  • Although some pets are more prone to putting on weight after they have been desexed, continuing to monitor food intake and providing regular exercise means that they will stay trim


  • Every year thousands of cats and dogs of all ages and breeds are put down or suffer as strays. Unplanned litters contribute hugely to these numbers. Pet parents can help reduce this number by desexing their pets early in life
  • It is a myth that female dogs and cats “need to have a litter or season” before they are desexed. There is no health benefit to pets in doing this. 


Call us for more information. Alternatively, fill out a form here and we will be in contact with you.

Serving the pet community of the Hobsons Bay City Council. The purrfect location for pet parents living in Altona North, Altona, Kingsville, Williamstown, Laverton and surrounding areas!

Cheryl Richards

Hello i hve a shitzu shes 11 months old i need her desexed how much plz im a pensioner

Thu Oct 2017

Hi Cheryl, thanks for getting in touch! We’ve sent you an email about this :)

Thu Oct 2017
Blair Rathmann

I hear you guys offer a de-sexing discount can i get some info

Mon Nov 2017

Hi Blair, thanks for getting in touch! We’ve sent you an email about this :)

Wed Nov 2017

hi i have a 2 year old small female staffy and im wondering how much to desex her?

Thu Nov 2019

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