When do Border Collies go into estrus? Border Collies generally go into estrus for the first time 8-10 months after birth; adult Border Collies go into estrus twice a year, usually from March to May in spring and from September to November in autumn. Each time lasts about fourteen days; during estrus, attention should be paid to a balanced and reasonable diet, and it is best to put the Border Collie in physiological pants.

The first estrus of a Border Collie is approximately 8-10 months after birth, when the dog’s reproductive organs are basically fully developed. However, due to factors such as climate, environment and growth conditions, some dogs come into heat earlier and some dogs come into heat later. If the time difference is not particularly large, this is basically a normal phenomenon.

Most dogs go into heat twice a year, and Border Collies do the same. The estrus period of Border Collies is mainly from March to May in spring and September to November in autumn. During these two seasons, Border Collie dogs will show obvious signs of estrus, such as being restless, irritable, prone to barking, frequent urination, like to run outside, like to be close to dogs of the opposite sex, etc.

Although Border Collie dogs in estrus will clean their vulva by themselves, the owner should also help the dog clean the vulva during this period. Use a clean towel to wipe the vulva clean every day, and put the dog in menstrual pants to avoid Bacteria grow. Border Collie female dogs in estrus will have a poor appetite, so you should also pay attention to the dog's diet. You can add some meat and fresh fruits and vegetables appropriately to supplement nutrition and improve the palatability of the dog's food.