Changes you might notice
Owners sometimes report changes in appetite, energy, behavior, nipple appearance and body shape. Some dogs show few outward changes, while others may have similar changes without being pregnant. These observations should not be used on their own to confirm a pregnancy.
False pregnancy is possible
A dog may show signs that resemble pregnancy without carrying puppies. Only a veterinarian can evaluate the situation and decide whether testing or further medical care is appropriate.
What confirms pregnancy?
Ask your veterinarian about relaxin testing and ultrasound at an appropriate time. Ultrasound can help evaluate pregnancy and fetal viability; later radiographs can be useful for litter number. See our test guide.
Symptoms that deserve prompt care
If your dog appears seriously ill, has heavy bleeding, collapses, has severe pain or has concerning labor signs, contact a veterinarian promptly. Never rely on a pregnancy calculator to decide whether help can wait.
References: Merck — Pregnancy Determination and Cornell — Difficult Births. Veterinary review pending.