French bulldogs are in estrus every spring and autumn. Female French bulldogs generally come into estrus from March to May and September to November, twice a year, each time for about 10-20 days, while male dogs will follow A female dog is in heat when she is in heat. French Bulldogs will only start to be in heat after 8 months. The time of heat will be different depending on each dog's physical constitution and nutritional status.

Symptoms of French Bulldogs in heat

1. Dogs in heat will become excited and restless, bark constantly, urinate frequently, and always want to Going out to find a dog of the opposite sex.

2. When a female dog is in estrus, the perineal door will be swollen, red mucus will flow out from the vagina, and she will become clingy and lethargic.

3. Male dogs in estrus will leak from their penis, lick their penis frequently, urinate everywhere and take up space, and leak urine when they are excited.