By Dr Duncan Houston
Caring for a pregnant dog means planning for both an ordinary day at home and a birth that may need urgent help. Food, medication choices and knowing when labour has stopped progressing all matter.
You do not need to guess the due date or manage delivery alone. Arrange veterinary care early, then build a written plan for the mother and her puppies.
Quick Answer
A pregnant dog needs veterinary confirmation, a suitable complete diet, comfortable exercise and a planned place to give birth. Pregnancy lasts about 63 days from ovulation, but mating dates are less precise. Strong contractions without a puppy, heavy bleeding or a mother who becomes weak or distressed require urgent veterinary help.
Confirm pregnancy and make a care plan
Nesting, enlarged nipples and milk do not prove pregnancy: false pregnancy can cause these changes after a season. A vet must establish what is happening before you change feeding or prepare for a litter.
Ultrasound is particularly useful around 25 to 35 days of gestation and assesses developing puppies. A scan performed too early can miss pregnancy. Later, an X-ray after approximately day 55 is usually more useful for counting puppies than an early scan. Your vet will choose timing using the breeding history. These are different questions: is she pregnant, are the puppies alive, and how many should be delivered? See the Merck Veterinary Manual's pregnancy assessment guidance.
If mating was accidental or raising a litter is not feasible, contact your vet promptly. Discuss available pregnancy management options, including spaying, rather than trying a home remedy. Treatment availability and suitability depend on where you live and the dog's health. PDSA explains pregnancy care and veterinary options.
What should a pregnant dog eat?
Do not double her food immediately after mating. Early pregnancy usually needs little extra energy; overfeeding can create excess body fat. As puppy growth accelerates after about day 40, calorie needs rise and several smaller meals become easier to manage.
Ask your vet to select a complete diet suitable for gestation and lactation and give you a portion plan based on body condition, litter size and the food's calorie density. Change food gradually and provide fresh water continuously. A bag labelled “performance” is not automatically appropriate for reproduction.
After delivery, milk production can increase food requirements substantially, but unrestricted feeding is not right for every mother, particularly one nursing a very small litter. Keep adjusting portions with veterinary weight and body-condition checks. VCA's pregnancy feeding guidance explains why needs differ across these stages.
Do not add calcium, milk or vitamin supplements routinely. Excess calcium can interfere with normal calcium regulation and increase the risk of eclampsia, a dangerous low blood-calcium problem, particularly during nursing. Use supplements only when your vet prescribes them. VCA explains eclampsia and calcium supplementation.
Exercise, infection prevention and medication
Keep comfortable walks and familiar, gentle enrichment in her routine. Let her rest when tired and shorten activity as pregnancy advances. Avoid exhausting exercise, overheating and rough play. Pregnancy is not the time to start an ambitious fitness programme.
Review every medicine, flea treatment, heartworm preventive and wormer with your vet. Do not stop a prescribed medicine without advice, but do not assume a product is safe in pregnancy because she used it previously. Some worms can pass to puppies before birth or through milk; the correct prevention schedule depends on the product and local parasites. ESCCAP's worm-management guidance includes pregnancy-specific protocols, which should be selected by your vet.
Check vaccine records before breeding where possible. During pregnancy, vaccination decisions require individual veterinary advice rather than an automatic booster or a blanket ban.
Canine herpesvirus can be particularly serious for newborn puppies. Keep the mother separate from other dogs during the final three weeks of pregnancy and the first three weeks after birth, with careful hand hygiene and clean equipment. Maintain calm human contact. This precaution is described in the Merck Veterinary Manual's herpesvirus guidance.
Pregnancy and birth: how urgent is it?
| What you notice | What it means | Next step |
|---|---|---|
| Comfortable, eating and behaving normally | No current warning sign | Continue the agreed care and monitoring plan. |
| Repeated vomiting, reduced food intake, weight loss or unusual vaginal discharge | Illness or a pregnancy complication needs assessment | Contact your vet the same day; seek emergency care if she deteriorates. |
| Nesting and panting near the expected date, without forceful pushing | Possible early labour | Record when it began and follow your vet's labour plan. |
| Forceful pushing without delivery, a stuck puppy, collapse or heavy bleeding | Possible difficult birth or another emergency | Call the emergency clinic immediately and arrange transport. |
What else could explain concerning signs?
Do not label an unwell dog as simply “tired from pregnancy.” Poor intake and weakness can reflect inadequate energy supply, including pregnancy toxaemia, especially late in gestation. Vomiting or discharge also needs assessment rather than being assumed normal. PDSA describes these pregnancy complications.
During birth, weak contractions can come from uterine inertia, while an oversized or incorrectly positioned puppy can obstruct delivery. These require different treatment. A vet may examine the birth canal and use imaging and blood tests before deciding whether medication or a caesarean is appropriate. Giving oxytocin without excluding obstruction can be dangerous. See Merck's explanation of difficult birth.
When is this an emergency?
Contact an emergency vet immediately for:
- Strong abdominal contractions for 20 to 30 minutes without a puppy.
- A puppy visibly stuck, or membranes protruding for more than 15 minutes without delivery.
- Green discharge before the first puppy. Do not wait for the mother to look unwell.
- Weak contractions without progress for one to two hours, or more than two hours between puppies when more may remain.
- Heavy bleeding, foul-smelling discharge, severe pain, collapse or breathing difficulty.
These warning signs reflect Cornell's advice on difficult birth. Use any earlier threshold your own vet gives you. A known high-risk pregnancy needs an individual delivery plan, particularly with previous difficult births or breeds prone to delivery problems.
Tremors, a stiff walk or seizures in a nursing mother can indicate eclampsia. Seek emergency treatment, rather than attempting to correct it with oral calcium at home.
Prepare for whelping step by step
- Agree on dates and contacts. Record mating and scan dates, the expected delivery window, the estimated puppy count and the clinic to call overnight. Plan transport and access to emergency treatment.
- Set up a quiet birth area in advance. Use a clean, appropriately sized whelping box with safe bedding and space for the mother to change position. Ask your veterinary team about preventing puppies from being trapped or chilled.
- Keep simple records. Note appetite and behaviour, then the start of labour, contractions, discharge and each puppy's birth time. Information recorded as it happens is more useful than reconstructing it during an emergency.
- Observe without forcing delivery. Do not pull on a puppy or insert equipment. Call for guidance if progress is uncertain.
- Plan the newborn check. Arrange veterinary examination within the first 24 hours after birth, sooner if anything is wrong. Record each puppy's weight daily and watch nursing closely.
Merck's neonatal-care guidance supports early examination and daily monitoring. A cold, weak puppy, poor suckling or failure to gain weight warrants prompt veterinary advice. Do not force-feed a chilled or weak newborn.
Common mistakes to avoid
- Using the mating date as an exact delivery deadline.
- Overfeeding early, then failing to adjust food during nursing.
- Copying another breeder's medication or worming schedule.
- Waiting for hours of strong pushing before calling for help.
- Assuming delivery is finished because the mother has stopped straining.
Frequently asked questions
How long are dogs pregnant?
About 63 days from ovulation. Breeding dates give a wider window because mating and fertilisation do not necessarily occur together. Your vet can help interpret the dates. Cornell explains pregnancy timing and normal whelping.
Does a temperature drop guarantee labour will start?
No. A temporary drop may occur before birth, but it can be missed and is not a reliable stand-alone decision tool. Follow the agreed due-date and labour plan, and never let a thermometer reading override signs of distress.
Can my dog still go for walks?
Usually yes, if she is comfortable and your vet has not restricted activity. Keep walks gentle, allow rest and avoid contact with other dogs during the late-pregnancy isolation period.
Is discharge normal after giving birth?
Some green, red or brown discharge can occur and should gradually reduce. A bad smell, increasing amount or an unwell mother needs veterinary assessment. Heavy bleeding is an emergency.
Should I give calcium to prevent milk fever?
Not routinely. Feed an appropriate complete diet and follow your vet's advice. Calcium treatment for a diagnosed problem is different from adding supplements throughout pregnancy.
Make the next decision clear
Good pregnancy care combines preparation with timely decisions. Confirm the pregnancy, follow a feeding and preventive-care plan, and keep the emergency clinic's details ready. If labour stalls or the mother becomes unwell, call promptly. Early assessment gives the veterinary team more opportunity to protect her and the puppies.
For more practical information to help you prepare questions for your veterinary team, explore ASK A VET™. Urgent pregnancy or birth concerns need direct veterinary care.
The ASK A VET™ Tracker logs live location and activity trends, so a change in routine never goes unnoticed.
Every ASK A VET article is written and reviewed by qualified veterinarians.
