Symptoms of miscarriage in dogs:

1. Symptoms of premonitory miscarriage: Dogs will discharge mucus from the vagina, the color is transparent or translucent jelly-like, sometimes Mixed with blood. At this time, dogs are mostly restless and breathing rapidly.

2. Invisible abortion: This situation usually occurs in the early stages of pregnancy in dogs. The embryo has not yet formed a fetus. After death, the tissue is absorbed by the mother's body, leaving no trace in the uterus, and the dog has no obvious symptoms.

3. Premature birth: In the first few days of delivery, the dog's breasts suddenly enlarge, the labia swell, and mucus leaks from the vagina to discharge the dead or inactive fetus. There is no fetal movement reflex during auscultation of the dog's abdomen, the external cervix is ​​slightly open, and the mucus is thin.

4. Delayed abortion: The dog’s fetus died in the abdomen, but because the cervix was not opened widely or did not open, the stillborn fetus remained in the body and could not be expelled.

Causes of miscarriage in dogs:

1. Dogs become sick due to bacterial and viral infections, which causes miscarriage.

2. Endocrine disorders in dogs, such as excess estrogen and insufficient progesterone.

3. Dogs have reproductive organ diseases, such as endometritis, which affect fetal development.

4. Improper feeding by the owner leads to malnutrition of the dog and affects the development of the fetus.

5. External force, such as impact, causes miscarriage in dogs.