The reason why Bichon Frize has a bad temper is probably because it is in estrus. If it is a lactating female dog, it will be more prone to bad temper. Whenever someone comes near, it will make a warning sound and become timid. Be cautious. In serious cases, it may even bite. At this time, it is best not to disturb it, but to comfort it more. Pay attention to a light and balanced diet. When playing on the street, wear a dog leash to avoid accidentally injuring pedestrians.