neutering and spaying pet

Spaying Vs. Neutering: What Are The Differences?

Spaying and neutering both refer to the sterilization of an animal, so why are there two terms to denote the procedure?

Many people use the terms interchangeably, but the difference between spay and neuter is actually quite significant. To better understand why these words aren’t synonyms, let’s take a closer look at what both procedures entail and what tells them apart.



Spaying Vs Neutering

Let’s discuss what spaying and neutering mean to understand the differences better.


Spaying, or, by its scientific name, ovariohysterectomy, is a surgical procedure done to remove a female’s reproductive organs – either the ovaries and the uterus, or only the ovaries (in which case it is called oophorectomy). In rare cases, the uterus and only one of the ovaries may be taken out.

The surgery is done under general anesthesia and entails a pretty complex – but generally safe – procedure. The vet will make an incision in the animal’s abdomen, carefully remove the reproductive organs, and then close the incision suturing several layers, including the abdomen’s wall, the hypodermis, and finally the outer layer of the skin.

Because spaying is an invasive procedure, the pain medication should be administered in the first few days, and the animal will take a week or two to recover completely.

benefits of spay or neutering animals



Neutering is also referred to as orchiectomy and entails removing the testicles of a male animal. The term is sometimes used to refer to “desexing” regardless of gender, but it generally involves the sterilization of males.

The procedure is faster and more straightforward than spaying, involving making an incision in the animal’s scrotum, removing the testicles, and then tying off the testicle stalks.

Spaying and Neutering difference

Neutered animals usually bounce back almost immediately after the anesthesia fades, but they should avoid effort and be kept in a stress-free environment for a few days.

After castration, the males will not produce testosterone anymore, and therefore will generally show a more submissive behavior, less aggression, and increased working capacity (in the case of horses or cattle, for instance).


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Differences Between Spaying and Neutering

As you can see, these two terms aren’t synonyms and shouldn’t be used interchangeably. The table below will show you what the difference between spay and neuter is in a straightforward, concise manner.



  • Spaying refers to the sterilization of female animals.
  • Neutering generally refers to the castration of males.
  • Spaying involves more complex, invasive surgery.
  • Neutering is fast and simple, the entire procedure taking just a few minutes.
  • Post-operative recovery can take up to two weeks for spayed animals.
  • Castrated males are usually back in shape the same day after the procedure.
  • Spayed females become more affectionate towards their owners, but may also turn more aggressive in general.
  • Neutered males usually show an improvement in behavior and become less aggressive, as opposed to females.
  • Because of the complexity of the procedure, spaying can be quite expensive, especially if not subsidized by government programs or foundations.
  • Neutering is usually much cheaper, as the surgery is simple and involves fewer costs, both in terms of medical equipment and post-operative care.

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