It takes about 10-15 days for a female Bichon Frize to have her period. During the period, pink liquid will flow out of the dog’s private parts. At this time, the owner needs to put on menstrual pants for the Bichon Frize to prevent the dog from soiling the hair. At home, the female Bichon Frize will experience her first period when she is 10 months old, and then every six months. Mating can be carried out from the first day to the tenth day of menstruation. By the fifteenth day, the chance of successful mating is very high.