French Bulldog Heat Cycle It can be messy and worrying too; particularly if you’ve not had a female dog before. If you’ve ever wondered how many times a year a French Bulldog goes into heat, what the signs are, how long they bleed, and how long the heat cycle lasts, then this guide will be the perfect primer for you.   How often do French Bulldogs go into heat? French Bulldogs tend to go into heat