Is a Bichon Frize a purebred if its ears stand up?

A Bichon Frize is a purebred if its ears stand up. Bichons with their ears standing up are often called "flying ears". Flying ears are a sign of the awkward growth period of a Bichon Frize. During the embarrassing period, Bichon Frize will have flying ears, ears that are not attached to the back, etc. The embarrassing period usually lasts for 3-7 months. If Bichon Frize has been like this since childhood, it may be innate and difficult to change. If it appears suddenly, it means that Bichon Frize has entered an embarrassing period. After the embarrassing period is over, it will return to its original appearance.