What are the common causes of early pregnancy loss in dogs?

Common causes include infection, poor fetal development, underlying health conditions in the mother, and environmental stressors. Ultrasound and blood tests performed by a vet are needed to clarify the specific cause.

What should I monitor and record at home?

Keep track of when symptoms started, how often your dog vomits or has diarrhoea, the amount and colour of any vaginal discharge, and daily temperature and weight readings. Take photos or short videos to share with your vet.

What tests will the vet run?

Common diagnostics include blood and urine tests, abdominal ultrasound, and X-rays. Bacterial culture or PCR testing may also be performed if an infection is suspected.

What does aftercare and follow-up involve after a pregnancy loss?

Follow your vet's instructions regarding medications and supportive care. Ensure your dog rests, offer an easily digestible diet, keep the perineal area clean, and attend all scheduled recheck appointments for blood work and imaging.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

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Disease Guide

Canine Early Pregnancy Loss in Dogs: Symptoms, Diagnosis & Care [2025]

Pregnancy loss in dogs can result from infection, hormonal imbalance, or fetal abnormalities. Veterinary evaluation is needed to identify the cause and plan follow-up care.

Take 1 minute to check the symptoms first

Last updated: 2026/01/04

Pethealthmap Editorial Team

Sources: AVMA, WSAVA, National Taiwan University College of Veterinary Medicine

When to See a Vet

Seek Emergency Care Immediately

•Heavy vaginal bleeding that does not stop
•Sudden collapse or inability to stand without assistance
•Persistent high fever with dry mouth and loss of skin elasticity

Schedule a Vet Visit Soon (within 24–72 hours)

•Light or intermittent vaginal bleeding
•Noticeably reduced appetite or refusal to eat for more than one day
•Repeated vomiting or diarrhea containing blood or mucus

01What symptoms indicate something is wrong?

Early pregnancy loss is often accompanied by physical and behavioural changes. If anything seems abnormal, note the details and seek a prompt veterinary evaluation to identify the cause and prevent complications.

Noticeably reduced appetite, with refusal to eat lasting more than 24 hours
Repeated vomiting, or vomit that contains blood or has an unusual colour
Diarrhoea or soft stools, possibly with blood or mucus
Rapid weight loss or appearing weak and lethargic
Persistent fever or noticeably elevated body temperature in a localised area
Signs of dehydration: dry mouth, poor skin elasticity, sunken eyes
If any of the above are present, schedule a veterinary assessment as soon as possible

Seek emergency care immediately if you notice the following symptoms:

⚠️ Seek immediate veterinary care if there is heavy vaginal bleeding or a rapid decline in your dog's condition

02How can I assess the situation at home? Key monitoring points and when to go to an emergency clinic

Keeping detailed records at home helps your vet quickly understand the situation and determine what tests are needed. Document timing and frequency systematically, and save any images or videos for reference.

Record when symptoms started and whether they are continuous or intermittent
Take your dog's temperature daily and track the trend
Note the frequency, content, and colour of any vomiting or diarrhoea
Weigh your dog daily and monitor changes in body weight
Photograph or video any vaginal discharge, bleeding, or other abnormalities
Track any changes in water intake and food consumption
If symptoms are worsening, arrange a clinic visit or referral to a specialist hospital promptly

03How will the vet make a diagnosis? Common diagnostic tests

At the clinic, your vet will perform a physical examination along with imaging and laboratory tests to identify the cause of the pregnancy loss and assess the risk of complications.

Blood work

assesses for infection, anaemia, and overall metabolic status

Urinalysis

rules out urinary tract infection or metabolic abnormalities

Abdominal ultrasound

evaluates the uterus and fetal viability

X-ray

assesses fetal positioning, uterine contents, or structural abnormalities

Bacterial culture or PCR

determines whether an infectious pathogen is present

04What does treatment and aftercare involve? Medication, diet, and care guidance

Treatment is determined by diagnostic findings and the dog's condition. It typically includes supportive care and medication as needed, followed by scheduled recheck appointments to confirm recovery.

Antimicrobial or supportive treatment prescribed based on test results
Hospitalisation for fluid therapy and close monitoring of vital signs if needed
Follow-up appointments to recheck blood work and imaging results
Transition to a highly digestible diet with gradual nutritional support at home
Keep the perineal area clean and monitor elimination habits and body weight
If a complex underlying issue is suspected, referral to a reproductive specialist may be recommended

05What should I prepare before the vet visit? Key information to help your vet identify the cause quickly

Note the onset time, frequency, and progression of all symptoms

Bring a record of recent food intake, bowel movements, and weight

Bring a list of all current medications and supplements

Bring photos or videos of vomiting, bleeding, or any unusual discharge

Bring any previous ultrasound or blood test reports if available

If symptoms worsen suddenly, go to the nearest clinic or emergency vet without delay

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.