Why Might a Puppy Be Stillborn? Causes & Prevention

A stillborn puppy is one that is born already deceased. If you are awaiting the arrival of your bitch's litter or assisting with delivery, discovering one or more stillborn pups can be profoundly upsetting, even when the other puppies appear healthy and vigorous.

Puppies may die in the womb or during birth. Identifying when a pup passed away can sometimes be estimated by comparing their size and development to the surviving littermates. In labours that are particularly prolonged or difficult, some puppies may succumb during the delivery process.

On rare occasions, if a puppy dies shortly before birth due to a long or complicated labour, it may be possible to attempt resuscitation. This could involve gentle cardiac massage to restart the heart and providing breaths through the nose and mouth. However, such efforts are seldom successful, reflecting the fragility of stillborn pups.

Stillbirth is uncommon in litters from healthy dams with normal delivery but remains a possibility breeders and dog owners should recognise. Understanding the factors that contribute to stillbirth enables you to prepare and take preventative steps.

1. Sexually Transmitted Infections (STIs)

Sexually transmitted infections can affect dogs silently yet have severe consequences on pregnancy outcomes. The most significant canine STI linked to stillbirth is Brucellosis. Adult dogs frequently show no symptoms despite infection, but the disease can cause late-term miscarriages, stillborn and resorbed pups intrauterinely.

Since Brucellosis cannot be cured, it is vital never to breed an infected dog. Testing prospective breeding dogs for STIs protects the health and viability of the litter and helps maintain responsible breeding standards.

2. Problems During Delivery

Historical evidence and natural canine behaviour demonstrate most dogs can deliver puppies successfully without intervention. Yet birth difficulties can arise, such as:

• Large puppies stuck in the birth canal
• Incorrect positioning of pups (e.g. breech or sideways)
• Mechanical obstacles due to the dam’s anatomy or uterine dysfunction

Certain breeds, shaped by selective breeding pressures, face more challenges. For example, the French bulldog has a high rate (75-80%) of litters delivered by caesarean section due to their physical conformation.

Delayed veterinary intervention during prolonged labour greatly raises stillbirth risks for both puppies and dam. Therefore, prompt assessment and assistance are crucial to safeguard welfare.

3. Hereditary Health Conditions

Many hereditary or congenital health problems cluster within pedigree lines, caused by limited genetic diversity. While many hereditary issues do not obstruct a normal whelping, some can cause late fetal loss and stillbirth.

Health screening of breeding stock helps minimise these risks. It ensures only dogs tested clear of relevant inherited disorders produce litters, reducing chances of stillbirth linked to genetic anomalies.

4. Dam’s Health and Suitability

The dam must be healthy, mature, and physically fit to carry and birth puppies successfully. Breeding a bitch that is too young, too old, malnourished, or suffering from illness greatly increases risks of stillborn puppies.

Optimal nutrition and stress-free management throughout pregnancy support litter viability and overall welfare. Regular veterinary care and prenatal check-ups ensure the dam’s condition supports successful breeding.

5. Stress During Pregnancy

Chronic stress or acute frightening events during gestation can cause early miscarriage or later fetal death. A calm, low-stress environment is essential for pregnant bitches to reduce stillbirth risk.

6. Medications and Supplements

Only administer medication or supplements during pregnancy under veterinary guidance. Some substances, including certain “natural” products, may cause birth defects, miscarriage or stillbirth.

Never give meds independently during pregnancy without discussing risks and benefits with your vet.

7. Other Contributing Factors

Other causes include uterine inertia where weak contractions prolong labour leading to hypoxia (oxygen deprivation) of puppies, infections such as canine herpesvirus, or birth canal abnormalities causing delivery trauma.

Conscientious breeding practices, including screening parents for infections, monitoring labour closely, and immediate veterinary help when difficulties arise, significantly reduce stillbirth rates.

Conclusion

Stillborn puppies are a difficult reality in breeding but often preventable. Responsible breeding requires attention to the dam’s health, early detection of infectious diseases, preparedness for delivery challenges especially in susceptible breeds like the French bulldog, and close veterinary support.

Understanding these key causes empowers breeders and owners to ensure healthier, happier litters and better outcomes for mothers and puppies alike.