Is gestational diabetes common in dogs and cats?

Gestational diabetes is relatively uncommon in dogs and cats, but the metabolic changes of pregnancy do increase the risk. If your pregnant pet shows signs of excessive thirst, increased urination, or low energy, seek veterinary attention promptly.

How does a vet confirm blood glucose problems during pregnancy?

A vet will typically begin with blood glucose testing and urinalysis as initial screening. If needed, a biochemistry panel and imaging are added to assess the mother's and foetuses' wellbeing. A final diagnosis is based on the combined findings.

Can I adjust my pregnant pet's diet at home?

It is not advisable to make major dietary changes on your own. A pregnant pet's diet should be assessed and adjusted by a vet or veterinary nutritionist to ensure the nutritional needs of both mother and foetuses are met while keeping blood glucose stable.

How soon should my pet be seen again after a blood glucose irregularity is detected?

The follow-up interval depends on the severity of the condition and can range from a few days to a few weeks. Your vet will decide the monitoring schedule based on blood glucose trends and clinical response.

How much do the tests and treatment for this condition usually cost?

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

Disease Guide

Gestational Diabetes in Dogs & Cats: Symptoms, Monitoring & Treatment [2025]

Gestational diabetes is a temporary rise in blood glucose that occurs during pregnancy, driven by hormonal changes. It is most common in intact female dogs. Insulin therapy may be needed to stabilise blood sugar, and the condition typically resolves after whelping — spaying is strongly recommended.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

Pethealthmap Editorial Team

Sources: AAHA, ACVIM, National Taiwan University Veterinary Hospital

When to See a Vet

Seek Immediate Veterinary Care (Emergency)

•Persistent inability to stand or noticeably worsening lethargy
•Repeated vomiting or complete loss of appetite
•Persistent excessive drinking with worsening weakness

Schedule a Veterinary Appointment Soon (Within 24-72 Hours)

•Drinking and urination have increased significantly above normal
•Noticeable weight loss over a short period during pregnancy
•Reduced activity and hiding more than usual

01What symptoms should concern you?

During pregnancy, metabolic and behavioural changes — including reduced energy, altered eating habits, and shifts in drinking patterns — can be early indicators that something needs attention.

Lethargy and noticeably reduced activity compared to normal
Repeated vomiting or obvious reluctance to eat
Unexpected weight loss during pregnancy over a short period
Increased urination frequency, including waking at night to urinate
Significantly increased water intake (polydipsia)
Changes in appetite or frequent food-seeking behaviour

Seek emergency care immediately if you notice the following symptoms:

⚠️ Persistent vomiting or complete refusal to eat
⚠️ Rapid, noticeable weight loss accompanied by weakness
⚠️ Severe lethargy or unresponsive drowsiness that does not improve

02How to monitor at home — observation tips and when to seek emergency care

Keeping a detailed home record helps your vet quickly assess your pet's condition and track how well treatment is working.

Record your pet's energy level and activity changes daily
Measure and log total daily water intake (by cup or bottle)
Weigh your pet at the same time each day and note the figure
Log vomiting episodes: time, frequency, and whether blood was present
Track daily urination frequency and any accidents or loss of control
Bring your observation log to every vet visit for the vet to review

03How will the vet make a diagnosis? Common tests and examinations

Your vet will typically start with blood glucose and urinalysis, then add imaging to assess the safety of both mother and foetuses.

Full physical examination to assess the mother's general condition and foetal wellbeing

Blood glucose measurement and complete blood count to evaluate metabolism and rule out infection

Biochemistry panel to confirm stable liver and kidney function

Urinalysis to check for glucosuria and ketonuria, indicating metabolic imbalance

Abdominal ultrasound to assess foetal count, heartbeats, and uterine condition

X-ray when necessary to evaluate foetal positioning and readiness for delivery

Referral to a specialist clinic for continuous glucose monitoring if required

04Treatment and aftercare — medications, dietary changes, and home management

Treatment focuses on stabilising blood glucose and supporting the mother and foetuses, with close monitoring of results and clinical signs to guide adjustments.

Insulin therapy or other medical management may be prescribed and adjusted by your vet based on response
A pregnancy-appropriate diet with scheduled, smaller meals to stabilise blood glucose
Regular follow-up visits to monitor blood glucose, biochemistry, and urinalysis
Ongoing home monitoring of water intake, urination, and body weight — records to share with your vet
Referral to a specialist hospital for further monitoring if blood glucose or clinical status fluctuates
Attend all scheduled check-ups and complete any required imaging or lab tests as directed

05What to prepare before the vet visit — key information to help your vet work efficiently

Note when symptoms first appeared and how they have progressed

Bring a simple daily log of water intake and urination

Bring a record of your pet's weight and food intake over the past two weeks

List all current medications and supplements your pet is taking

Bring any previous test results (blood work, biochemistry, or imaging) if available

Inform the vet of the expected due date and book a clinic that can perform blood glucose monitoring

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.