Should You Spay or Neuter Your Puppy?

If you have a mongrel or mixed breed, have it neutered. There’s no reason to breed it. If someone wants a mongrel, there are many lovely ones already waiting in shelters.

If you have a "purebred" from a pet shop, have it neutered. The pet shop puppy will not be good breeding quality, and its pedigree may be false. In fact, the dog might not even be purebred. Many shelters have purebred dogs available for adoption, and at a much lower price than a pet shop puppy.

If your puppy came without registration papers, have it neutered. Without registered proof of pure breeding, the dog is no different from a mix and cannot produce registered, purebred pups.

If you bought a registered but pet-quality purebred from a good breeder, and the puppy is not eligible to be shown for some reason (such as incorrect colour), the breeder may insist that you have the dog neutered. But if the puppy sold as a pet has no disqualifying faults, you might want to wait a bit before neutering your pup.

Neutering is permanent. A neutered dog cannot be shown or bred. If the “pet quality” puppy from a good bloodline is neutered young and then grows up to be a top show-quality dog, you and the breeder are simply out of luck.

This happens more than you might think, because determining whether an eight-week-old puppy will be pet or show quality is difficult unless the puppy has an obvious disqualification. Even experienced breeders make mistakes. Many a breeder has lamented about selling a “pet puppy”, only to find out a few months later that the now-neutered pet turned out far superior to the “show puppy” they kept.

If there is even the slightest chance you or the breeder might want to show or breed the puppy later on, ask the breeder for a Non-Breeding Agreement. With this, you can’t legally breed the dog, but you don’t have to neuter it right away, if the breeder agrees to wait. Then you can wait until the puppy is older and re-evaluate the situation.

After a few months, the puppy might develop an undesirable or even disqualifying condition. He could end up with misaligned teeth, grow too tall or not grow enough, or be diagnosed with a health problem such as bad hips or eye disease, or, in the case of a male, he could have only one (or even two) undescended testicles. Any dog with these kinds of problems is generally not suitable for breeding and should be neutered, but consult your breeder first, just to be sure.

Remember: you can always neuter later, but you can’t go back and undo it!

If you decide not to neuter your puppy, the time will come when you need to look at it again. Older dogs are at greater risk for some cancers, and neutering can remove some of that risk.

Once their breeding and show careers are over, female dogs should be spayed. Spaying stops those annoying heat cycles and almost eliminates future "female" cancers.

Male dogs kept for breeding are sometimes neutered later in life, but not always. Consult your veterinarian if you feel this is an option you want to consider.