When do French Bulldogs go into estrus? French Bulldogs generally go into heat for the first time 8-10 months after birth; adult French Bulldogs go into estrus twice a year, usually from March to May in spring and September to November in autumn. Each time lasts about twenty days; during estrus, you should pay attention to hygiene and care, and it is best to put on menstrual pants for your French Bulldog.

The first estrus of a French Bulldog 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. It is normal for dogs to come into heat for the first time before one and a half years old.

Most dogs go into heat twice a year, and French Bulldogs do the same. The estrus period of French bulldogs is mainly from March to May in spring and September to November in autumn. During these two seasons, French Bulldogs will show obvious signs of estrus, such as restlessness, irritability and barking, frequent urination, and a tendency to run outside.

When the French Bulldog is in heat, the owner should pay attention to supplementing the dog's nutrition. You can add complementary foods to the dog, such as chicken breast, fish, cabbage, carrots and other foods, cook them and chop them into pieces, and add them to the dog's food. If you don’t have time to make complementary food, you can also buy high-quality nutritional paste to feed your dog. During estrus, if you do not plan to breed your dog, it is best to wear menstrual pants for it to prevent pregnancy and bacterial invasion.