Eclampsia in Dogs and Cats: A 2025 Vet Emergency Guide by Dr Duncan Houston 🐶🍼
By Dr Duncan Houston, BVSc | July 2025
⚠️ What Is Eclampsia?
Eclampsia is a life-threatening emergency seen in nursing mothers—especially small breed dogs with large litters. It is caused by severe calcium deficiency (hypocalcemia) as the mother’s body struggles to meet the demands of milk production. Eclampsia can also occur in cats, though it is much less common. 🧬
💥 What Causes Eclampsia?
Calcium is essential for muscle function and blood pressure regulation. During:
- 🐾 Late pregnancy – calcium is used to build puppy skeletons
- 🤱 Birth – uterine contractions use calcium
- 🍼 Lactation – ongoing milk production drains calcium further
Ironically, calcium supplementation during pregnancy increases eclampsia risk because it suppresses the body’s natural hormone signals to regulate calcium. Homemade diets rich in organ meat may also predispose to hypocalcemia. ❌
🔍 Early Signs of Eclampsia
- 😰 Restlessness or anxiety
- 🐾 Panting and pawing at the face
- 🍼 Neglecting the litter or reduced maternal behavior
- 🐕 Weakness or reluctance to stand
Advanced Signs:
- 🤯 Muscle tremors or rigidity
- ⚡ Shaking and uncoordinated gait
- 🌡️ Fever
- 💥 Seizures
These signs typically occur 1–4 weeks after giving birth, when lactation peaks. Immediate veterinary care is critical at this stage. 🚨
🧪 Diagnosis
Your vet will examine your pet and perform bloodwork to confirm low calcium levels. Other findings may include:
- 💓 High heart rate
- 🌡️ Elevated body temperature
- 🔬 Confirmation via serum calcium levels
💉 Emergency Treatment
Once diagnosed, treatment is swift:
- 🔌 IV calcium gluconate to quickly raise blood calcium
- 🫀 ECG monitoring during infusion to avoid heart complications
- 💊 Oral calcium (e.g., Tums) for maintenance
- 🍼 Weaning pups early to reduce lactation stress
- 💊 Anti-seizure meds if tremors or seizures occur
Many pets recover within hours if treated promptly. 🏥
📦 Home Care & Monitoring
Post-treatment, your vet may recommend:
- 💊 Continued calcium supplements for the remainder of lactation
- 🥣 Feeding a high-quality growth or puppy diet
- 🧘 Reducing maternal stress and overexertion
- 👀 Monitoring for relapse over the next 1–3 weeks
📋 Eclampsia Summary Table
| Aspect | Details |
|---|---|
| When | Late pregnancy to 4 weeks postpartum |
| Who | Small breed dogs with large litters |
| Symptoms | Tremors, weakness, seizures, restlessness |
| Diagnosis | Low blood calcium |
| Treatment | IV calcium + oral supplements |
| Prevention | No calcium supplements in pregnancy; supplement during lactation only |
🔧 Ask A Vet Can Help
Worried your dog or cat is showing signs of eclampsia? Use the Ask A Vet app to connect with licensed vets for urgent triage advice, treatment guidance, and lactation management support. 🐕💬
🐾 Final Thoughts from Dr Duncan Houston
Eclampsia is scary—but preventable and treatable. Avoid calcium during pregnancy, feed a vet-approved growth diet, and be alert during the critical lactation window. Early care saves lives. 💙🍼
— Dr Duncan Houston, BVSc
Visit AskAVet.com or download the Ask A Vet app for support on nursing care, diet, and calcium emergencies. 📱
This article is general veterinary education and does not diagnose or treat an individual animal. Always confirm medication names, doses and interactions with the veterinarian who knows your pet.
If your animal is struggling to breathe, collapsed, bleeding heavily, seizing, or has eaten something toxic, contact your vet or the nearest emergency clinic now.
Animal Poisons Helpline (AU) 1300 869 738 · Animal Poisons Helpline (NZ) 0800 869 738 · ASPCA Animal Poison Control (US) (888) 426-4435
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Ask A Vet articles are written by Dr Duncan Houston BVSc, a practising veterinarian, unless another author is named in the byline.
