From what age can my pet be neutered?

In male animals of all species, the procedure (called castration) involves removing the testicles. This is a routine procedure. It can take over 6 weeks for the testosterone to dissipate from the animal’s body.

In female animals the operation (known as spay) involves removing the uterus, fallopian tubes and ovaries. This means your pet will no longer have seasons and will no longer be able to have offspring.

In both sexes the procedure is irreversible.

Cats and dogs

Both cats and dogs can be neutered from 6 months old.


Males (hobs) can be castrated from 5 months of age onwards. This prevents unwanted litters but also helps to reduce the characteristic odour and makes the ferret easier to handle and less aggressive.

Females (jills) can be spayed from 6 months of age onwards. Any jill that is not used for breeding is at risk of developing Aplastic Anaemia which is fatal. If you don’t want your ferret spayed, please speak to one of our vets about alternative treatments. Jills come into season from early spring until September.


Males (bucks) can be castrated from 4 months of age onwards (or as soon as testicles can be seen). This prevents unwanted pregnancy but also helps to calm him down so he can live with other castrated males.

Females (does) can be spayed from 5 months onwards. Does should be neutered if not used for breeding to prevent cancers of the reproductive organs and improve behaviour.


Males can be castrated from 9 months of age.

Females are generally not spayed due to the risk of anaesthetic. Males are usually castrated to prevent pregnancy.

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