Generally speaking, normal golden retrievers come into estrus twice a year, usually from March to May in spring and September to November in autumn. The main symptoms of a female dog in heat are as follows:
1. Blond hair in early stage of estrus. The time is about 7-10 days. Generally speaking, this is the preparatory stage for estrus, when the reproductive system begins to prepare for ovulation. The eggs are close to maturity, the epithelium of the reproductive tract begins to proliferate, and the female Golden Retriever is also more irritable, with increased secretions, congested vulva, swollen vulva, flushing and moist lubrication, and mucus mixed with blood. At this time, male Golden Retrievers will often smell the scent, but female Golden Retrievers are not allowed to mate at this time.
2. Blond estrus. Approximately 6-14 days is the period when the signs of estrus are most obvious and mating is accepted. The vulva continues to swell and soften, the mucus flowing out becomes lighter in color, and the bleeding decreases or stops. At this time, the female Golden Retriever will take the initiative to approach the male Golden Retriever. When the male dog climbs over, she will take the initiative to step down on her waist, face her buttocks towards the male dog, and tilt her tail to one side to allow mating. 2-3 days after estrus, the female dog begins to ovulate, which is the best time for mating.
3. The golden hair is in late stage of estrus. The temperament of the female Golden Retriever became quieter, the swelling of the vulva subsided, and gradually returned to normal, and the male dog was not allowed to approach. It usually lasts for two months and then enters the anestrus period. If you are pregnant, the period after estrus is the pregnancy period.
4. Golden Retriever is in estrus. The reproductive organs enter a state of inactivity. It usually lasts about 3 months, and then enters the next proestrus.
