If a dog is not clean during menstruation for two months, it may be that the reproductive organs are infected and cause bleeding. Usually dogs will have their period when they are 6-8 months old, and then they will have it twice a year, with an interval of about 6 months each time. The period of dogs' period is relatively long, usually about 16 days. Once it exceeds three weeks, it means that the dog may be suffering from a disease that causes bleeding from the reproductive organs.

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Usually dogs will have their first period when they are in heat for the first time, and then they will have their period twice a year, and the first time they have heat is The length of time it takes for dogs to have their period varies, but if it takes too long, the owner will have to take the dog to the pet hospital for examination and treatment.