Should you breed your dog: an honest decision guide

Quick answer

Breeding a dog is not the same decision as wanting puppies. It is a decision to take on the health of the bitch through pregnancy and whelping, the survival of neonates that cannot regulate their own temperature or blood sugar, and a share of responsibility for every dog produced for the next decade and more.

The honest version of the question is not "would my dog make lovely puppies". It is "what happens if this goes wrong at three in the morning, if half the litter does not sell, if a puppy is born with a condition I could have screened for, and if a buyer wants to return a two-year-old dog to me". If any of those answers is uncomfortable, that is the answer to the original question.

Loving a dog is a reason to want another one like her. It is not, on its own, a reason to breed from her.

• Health testing means the specific screening schemes for that breed, done and recorded before mating, not a general "she has never been ill".
• Temperament is inherited. Breeding from a fearful, reactive or aggressive dog passes on a real risk, whatever the pedigree says.
• Whelping is a genuine medical event. Dystocia, caesarean, eclampsia and death of the dam are all possible outcomes.
• "One litter is good for her" is not true. There is no health benefit to the bitch from having a litter.
• Plan for the litter not selling, and for taking a dog back at any point in its life.

Decide in 60 seconds

The health screening question

Screening exists because the conditions that matter most in dogs are usually invisible in a healthy adult. A dog with moderate hip dysplasia can run, jump and show no lameness for years. A dog carrying a recessive mutation for an inherited eye disease is completely normal. The whole point is to find what you cannot see.

What is appropriate depends entirely on the breed, and the authoritative list is the one published by the national kennel club and the breed club for that breed in your country. Broadly it falls into four groups.

Radiographic scoring. Hip and elbow assessment under standardised positioning, read by an approved panel and given a score or grade. This is not the same as a vet looking at a radiograph and saying it looks fine.

Eye examination. A clinical examination by an approved ophthalmologist, repeated at intervals because some conditions appear later in life.

DNA testing. Available for specific mutations in specific breeds. A dog can be clear, a carrier, or affected, and carriers are not necessarily excluded from breeding, but two carriers must never be mated together.

Breed-specific extras. Cardiac auscultation or echocardiography in breeds prone to heart disease, respiratory function assessment in flat-faced breeds, and various others.

Two things commonly go wrong here. The first is treating a general health check or a vaccination appointment as though it were screening; it is not, and no vet examining a healthy dog can tell you its hip score. The second is screening one parent. The genetics only work if both are tested, and the results are read together.

Ask for the actual certificates from the owner of the other dog, and check the identity on them matches the dog's microchip.

Temperament is not a training problem you can fix later

Fearfulness, noise sensitivity, reactivity to strangers and low resilience under stress all have a heritable component. A puppy inherits a starting point, and then the breeder's socialisation determines how much of that starting point is expressed.

That means a nervous bitch produces puppies with a raised risk of anxiety even in good homes, and those puppies go on to be the dogs that struggle in ordinary life. A bite history in either parent should end the conversation.

Assess honestly rather than protectively. The relevant question is not whether your dog is lovely with you. It is how she is with an unfamiliar person in an unfamiliar place, with a stranger's dog, with handling by a vet, and with a household that is noisier and less predictable than yours.

An added factor sits on top of this. A bitch's behaviour during pregnancy and lactation shapes the puppies too, both through the litter's early environment and through her handling of them. An anxious dam raising a litter in a stressful setting produces measurably harder puppies to place well.

A whelping setup is equipment, space and time. The equipment is the cheap part.

What can happen to the bitch

Pregnancy and whelping carry real risk, and the reason to write it down plainly is that most people who breed one litter have never seen any of it.

Dystocia. Whelping that will not progress. It can be because a puppy is malpositioned or too large, or because the uterus is contracting weakly or has stopped, which is the more common reason. The window in which intervention still saves puppies is not long.

Caesarean section. Frequently needed out of hours, which is where the cost sits. In some breeds it is close to routine rather than an emergency.

Eclampsia. Blood calcium falls in a bitch producing large volumes of milk. It usually appears in the first weeks after whelping, starting as restlessness and panting and progressing to stiffness, tremors, collapse and seizures. It is fatal if untreated and it is treatable if caught.

Mastitis and metritis. Infection of the mammary tissue or the uterus after whelping, both of which make the bitch systemically ill.

Retained placenta or retained puppy. Presents as continuing discharge, a bitch that is off colour, or a fever after whelping.

Haemorrhage and uterine rupture. Uncommon, and catastrophic.

Death. It is rare, and it happens.

Set against that, spaying removes the risk of pyometra entirely, and spaying earlier in life reduces mammary tumour risk. The idea that a litter benefits a bitch's health is not supported.

What can happen to the puppies

Newborn puppies are born with almost no ability to regulate their own body temperature, no shiver reflex, and very limited energy reserves. A puppy that gets cold stops suckling, and a puppy that stops suckling gets colder and drops its blood glucose. That spiral is the single most common way puppies are lost, and it is silent.

The practical implications are constant. The whelping area has to be kept warm without overheating the dam, every puppy has to be weighed on a gram scale daily and the numbers written down, and a puppy that has not gained needs attention that night rather than in the morning.

Add infectious disease in the first weeks, congenital abnormalities that only become apparent as puppies develop, and the possibility of the dam rejecting or lying on a puppy. Hand-rearing a rejected litter means feeding around the clock for weeks and toileting each puppy after every feed.

The obligations that outlast the litter

Placing puppies. A litter takes weeks of work to place well, and the buyers who take the last two puppies are usually not the buyers you wanted. Plan for a puppy that does not sell, because that puppy is yours.

Lifetime responsibility. A responsible breeder takes a dog back at any age, for any reason, forever. That is not a slogan; it is the mechanism that stops dogs from a litter ending up in rescue. If you cannot commit to it, you are asking someone else to absorb the consequences.

Records and paperwork. Microchipping before sale, registration, contracts, and in many countries a breeding licence once you exceed a set number of litters. The rules vary a great deal by country, so check your own.

Registry rules. Kennel clubs commonly refuse to register litters from a dam that is too young or too old, that has already had a certain number of litters, or that has had repeated caesareans. Find out the rules in your country before planning, not after.

A dam has to tolerate close handling by strangers during a difficult time. If routine handling is already a struggle, that is information.

The honesty test

Answer these out loud, and treat any no as a stop rather than a hurdle.

Do you know, from the breed club, exactly which screening schemes apply to your breed, and have both parents completed all of them with recorded results?

Have you seen the other dog's certificates, and do the identities match?

Is the bitch physically mature, in good body condition, up to date on preventive care, and free of any condition that pregnancy would worsen?

Is she confident with strangers, with handling, and in unfamiliar places?

Do you have the money available now, not on credit, for an out-of-hours caesarean and for veterinary care of a sick puppy?

Can you be present continuously through whelping and for the weeks that follow, including nights?

Have you agreed with your vet what the plan is if whelping stalls, and do you know where the nearest out-of-hours service is and what it costs?

Do you have homes lined up, and are you prepared to keep any puppy you cannot place?

Will you take any dog from this litter back at any point in its life?

If your bitch dies, will you be able to hand-rear the litter, or do you have someone who can?

Is there anything about this litter that improves the breed, rather than simply producing more dogs?

What never to do

Do not breed from a dog that has not completed its breed's screening schemes, whatever the pedigree looks like.

Do not mate two carriers of the same recessive condition.

Do not breed from a dog with a bite history, severe fear, or a condition that is known to be heritable in the breed.

Do not breed a bitch on her first season, or one that is too young or physically immature.

Do not repeat breed a bitch that has needed a caesarean without specific veterinary advice.

Do not treat a general vet check, a vaccination or "she seems fine" as health screening.

Do not use a stud dog without seeing his health results and, where it is relevant in your country, his brucellosis screening.

Do not plan a whelping without knowing where the out-of-hours service is and what the caesarean will cost.

Do not sell puppies before they are old enough, before they are microchipped, or without a contract and lifetime return commitment.

When to get help

Contact a vet immediately during whelping if the bitch has been straining strongly for a prolonged period without producing a puppy, if there is a long gap between puppies with no straining, if there is fresh bleeding or a green or black discharge before the first puppy, or if she becomes weak or distressed.

Contact a vet immediately after whelping if she is restless, panting, stiff, trembling or unsteady, if she has a fever, a foul discharge, or a hot painful mammary gland, or if she stops caring for the litter.

Deciding not to breed is a legitimate and common conclusion, and it is the right one more often than not.

Contact a vet the same day for any puppy that is cold to the touch, is not gaining weight, cries persistently, or has been pushed away from the litter.

Bring the screening certificates for both parents, the mating dates, the results of any pregnancy scan, the daily puppy weights, and the whelping timeline including when straining started and when the last puppy arrived. Book the pre-breeding examination early enough that a problem found on it still changes the plan, which means months before a planned season rather than days before a mating.