Dystocia in Dogs and Cats

1 Symptoms

Dystocia is marked prolongation of the first (dilation) and especially the second (expulsion) stage of labor beyond normal, so the mother cannot deliver without assistance.

Main causes are fetal abnormality, maternal birth-canal narrowing, and inadequate maternal expulsive force. Weak, short, or infrequent straining for about three hours after labor starts without a puppy delivered indicates primary uterine inertia. Persistent strong contraction for one hour without delivery also signals dystocia. Small-bodied animals are at higher risk.

2 Causes and Transmission

The condition is not infectious. It results from fetal size or position problems, a narrow maternal pelvis, or weak uterine contractions, often worsened by calcium deficiency or first-litter inexperience.

3 Diagnosis

Diagnosis is based on labor history and examination: failure to progress despite straining, abnormal fetal position on palpation or imaging, and pelvic assessment. The veterinarian determines whether medical or surgical delivery is needed.

4 Treatment

Cesarean section is performed when natural delivery is not progressing, with systemic antibiotics or supportive medication afterward and correction of fluid and acid-base balance under veterinary direction.

In some cases hormone preparations are used to strengthen contractions once the birth canal is clear. Calcium supplementation may be given for deficiency. Neonates need warmth and assisted feeding.

5 Prevention

Choose breeding pairs with compatible size and screen for known pelvic or conformational risks. Provide balanced nutrition with adequate calcium during pregnancy.

Plan for veterinary-assisted whelping, especially for small breeds and first litters, and seek help promptly if labor stalls.