Shiba Inu generally starts to go into estrus after reaching eight months of age. When the Shiba Inu grows to eight to fourteen months, it is also called the Shiba Inu’s estrus period. Normally, female dogs go into heat twice a year, once in spring and once in autumn. There is no set time for male dogs to come into heat.
The timing and symptoms of a Shiba Inu in estrus: a symptom of a female dog growing and developing to a certain age. This phenomenon of sexual activity is called estrus. Different breeds of dogs, different growing environments, and different feeding conditions have very different estrus times. However, normal dogs generally go into estrus twice a year. Most female dogs go into estrus once every year from March to May in the spring, and can go into estrus again in the autumn from September to November. If the female dog fails to mate and conceive within a mating period, she must wait until the next estrus before mating. During the female dog's estrus cycle, the female dog's overall condition and reproductive organs will change under the stimulation of nerves and hormones.
The female dog’s vulva can be seen to be congested, flushed, swollen, moist, and leaking mixed with blood. slime. Male dogs often come after smelling the scent, but female dogs often do not allow male dogs to mate with them. This is the early stage of estrus and is not suitable for breeding yet. Generally, when estrus lasts until the sixth to fourteenth day, the female dog's vulva will continue to swell and become soft, the color of the mucus flowing out will become lighter, and the bleeding will decrease, become lighter, or stop. At this time, the female dog will take the initiative to approach the male dog and allow mating. This is also the best time for breeding. Finally, when the swelling in the female dog's vulva gradually subsides, the vagina returns to normal, and the temperament returns to a well-behaved and quiet nature, male dogs are not allowed to approach. The estrus period is over. The estrus of male dogs is irregular. During the breeding season when female dogs are in concentrated estrus, or when the male dog smells the special smell of the female dog in estrus, it can cause the male dog to become excited and complete mating.