There are many possible reasons for a dog’s vaginal bleeding for a month. Here are some possible explanations and corresponding treatment suggestions: Estrus: When a dog enters estrus, due to changes in hormones in the body, vaginal bleeding may occur. Case. Usually estrus bleeding lasts for 7 to 14 days, but it may last longer. If your dog’s bleeding is within this range and there are no other abnormal symptoms, it may be a normal physiological phenomenon. Reproductive system diseases: including vaginitis, metritis, pyometra, ovarian cysts, etc. These diseases may cause long-term vaginal bleeding in dogs. If the dog's bleeding exceeds the normal range, or is accompanied by other symptoms (such as loss of appetite, lethargy, fishy-smelling secretions, etc.), it is recommended to take the dog to the pet hospital for examination and treatment as soon as possible. Vaginal discharge examination, ultrasound examination, etc. may be required to determine the cause and provide targeted treatment.

Vaginal injury: If the dog has had mating behavior or childbirth experience, it may be due to male The dog's penis is too large or the pup's size is too large and damages the vagina, causing bleeding. In this case, the dog may need anti-inflammatory treatment or, in more severe cases, infusions.

Miscarriage: If your dog has heavy bleeding during pregnancy, it may be a sign of miscarriage. This may be caused by trauma, infection, etc. and requires medical attention as soon as possible.