Companion Animals

Hypocalcaemia in Nursing Cats: Welfare and Emergency Management

Eclampsia (puerperal tetany) is a life-threatening emergency in nursing cats caused by calcium depletion during lactation.

Key Facts

Less common in cats than dogs but can be severe and life-threatening
Typically occurs in the first 1-4 weeks of lactation in cats nursing large litters
Signs include muscle tremors, rigid gait, hyperthermia, seizures and collapse
Intravenous calcium administration reverses signs rapidly — but must be done carefully
Prevention involves appropriate diet during pregnancy and lactation

Welfare Considerations

Hypocalcaemia in nursing cats is acutely distressing — the neurological signs of trembling, rigidity and seizure indicate severe suffering. Without treatment, death occurs rapidly. Early recognition of subtle signs — restlessness, muscle fasciculations — allows intervention before collapse. Separating kittens temporarily to reduce lactation demand supports recovery. Appropriate calcium supplementation and nutrition during pregnancy significantly reduces risk.

What You Can Do

Feed breeding cats a nutritionally complete diet formulated for pregnancy and lactation
Monitor nursing cats closely in the first weeks of lactation for trembling or restlessness
Seek emergency veterinary care immediately if hypocalcaemia signs are present
Temporarily remove kittens and supplement with formula feeding during maternal recovery
Discuss preventive supplementation strategies with a veterinarian for high-risk situations