When does a Border Collie go into estrus? A female Border Collie goes into estrus for the first time about 6-8 months after birth; an adult Border Collie goes into estrus twice a year, usually from March to May in spring and September to November in autumn. Once, the duration is generally about 5-15 days; it is best to wear physiological pants for Border Collie dogs during estrus.

The first estrus of a Border Collie female dog is approximately 6-8 months after birth, when the dog’s reproductive organs are basically mature. However, due to factors such as climate, environment and growth conditions, some dogs come into heat earlier, and it is normal for some dogs to not come into heat until 10-12 months after birth.

Border Collies, like other dogs, will go into heat at a fixed period every year. Usually the Border Collie goes into heat for the first time 7-10 months after birth, and the duration of heat is usually about 5-15 days. In addition, female Border Collies will go into estrus twice a year, usually between March and May in spring, and between September and November in autumn. The main symptoms of estrus are that female dogs become excited and restless, urinate frequently, have red mucus flowing out of their vulva, and like to sneak out outdoors to look for their favorite partner, etc.

The Border Collie’s personality will change greatly during the period of heat, and the owner should provide understanding and love. Moreover, during the period when the Border Collie is in estrus, attention should be paid to supplementing the dog with sufficient nutrition. You can feed the dog some nutritional paste, calcium powder, vitamins, etc. During estrus, if you do not plan to breed your dog, it is best to wear physiological pants for it.