Causes of dystocia in dogs:

1. The fetus is abnormally positioned in the birth canal. In addition, the fetus is too large. During delivery, the fetus is not delivered head first as normal, but adopts other incorrect postures to advance toward the birth canal. Therefore, if the female dog has severe labor pains and is pressed for time, but still cannot deliver the fetus, it is necessary to question whether the fetal position is abnormal. Something is wrong. The fetus is too large. When the female dog is given too much nutrients and not enough exercise during pregnancy, or if the number of fetuses is only one, the fetus develops too large, so that the fetal head is much larger than the birth canal of the female dog. Cause dystocia.

2. Some female dogs do not exert enough force when giving birth, or exert only a little force when the labor pains begin. In addition, there is insufficient exercise on weekdays and lack of exercise of the muscles and bones, which will cause weak labor pains. Some female dogs are afraid of pain, are obese, or are dissatisfied with the birth environment, which may also cause weak labor pains. On the other hand, weak labor pains may also be caused by low calcium in the bitch's blood, or by the inactivity of the hormones that cause labor pains.

3. Dog breeds that have previously had a pelvic fracture or a congenitally narrow pelvic cavity (such as corgis and short-nosed dog breeds, such as Shar-Pei). In addition, if the dog becomes pregnant too early (such as 6 to 7 months old), the pelvic cavity has not been fully developed, which will also lead to dystocia. In addition, obese dogs are also prone to dystocia.

4. Some dogs have vaginal stenosis, hyperplasia, cysts, and even tumors, which can easily lead to narrowing of the birth canal and dystocia.

Symptoms of dystocia in dogs:

1. Judging from the number of days the dog has been pregnant, if it is more than 72 days from the day of breeding, the dog has the possibility of dystocia;

2. The mother dog’s abdomen contracted obviously and strongly for more than 30 minutes but no puppies were born;

3. The mother dog suffered severe pain and no puppies were born;< /p>

4. The amniotic membrane ruptured, amniotic fluid flowed out, and no puppies were born within two hours;

5. The mother of the dog seemed very weak and had no strength to give birth;

< p>6. After giving birth to one or several fetuses, if the labor does not continue for more than 4 hours and there are still fetuses in the birth canal, it is dystocia. This dystocia is mostly caused by weak uterine contractions.