Only female dogs have menstrual periods, and the menstrual period and the estrus period are carried out at the same time, the peach area becomes swollen and blood-colored discharge, similar to human menstruation. Dogs generally enter estrus at the age of 7 or 8 months, and each estrus lasts for 2 to 3 weeks. When this happens, the owner needs to take good care of the dog.

The best time for a female dog to be in heat is after her menstrual period 9 to 13 days, but if your dog is in heat for the first time, you should pay attention. Do not breed. If you breed for the first time, it is easy to cause problems such as miscarriage, slippery tires, dystocia, etc. The dog's body hurts a lot. It is recommended that it is not too late for the second estrus. If it is the first estrus, it is best to buy physiological pants for him to wear to prevent him from being harassed by big dogs when he goes out.