Dog Desexing

Why should I desex my dog?

If you do not intend to breed from your dog surgical desexing has undoubted advantages both in the male and the female.

In the male dog:

  • It removes the sexual urge so that if the dog gets the scent of a bitch in oestrus he is unlikely to show any interest which in certain breeds can be an undoubted advantage
  • Reduce marking behaviour as an adult
  • Can help reduce the likelihood of certain behavioural problems developing
  • Reduces the chances of medical problems such as testicular cancer, prostate problem/cancer, and certain perianal skin conditions.

In female dogs:

Desexing the bitch prevents oestrus as well as breeding. She will not come into heat and therefore will not have to be confined and deprived of her usual exercise and companionship which otherwise will occur usually twice a year when she is in heat (oestrus) for at least 3 weeks each time.

Owners are often tempted to have at least one litter from a bitch. There appears to be a general misconception that having a litter will improve temperament. There is no scientific evidence to support this theory whereas it has been proven that neutering in the bitch not only obviously prevents subsequent and not uncommon diseases of the uterus but also reduces the possibility of breast cancer.

Once desexed the bitch will have no oestrus and will not have unwanted puppies or phantom pregnancies which in some bitches causes as lot of distress.

When should I desex my dog?

The general recommendation is to desex your pet between 5-6 months of age.


There is new evidence to suggest that there is a benefit to wait until 12 months of age to desex large and giant breed male dogs. The evidence suggests that Testosterone can have a beneficial effect on the development of bones and joints in these large breed dogs.

At this stage there is no evidence to show any health benefit from delaying desexing for female dogs.

So our recommendation is that all larger and giant breed male dogs should be desexed after 12 months of age.

If however any behavioural problems were to develop this should be brought forward.

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