When the Bichon Frize is four months old, there is no need to soak the dog food until it is soft. Generally speaking, when the dog is three months old, the owner can gradually start to switch to dry dog ​​food. There are several benefits of eating dry dog ​​food. Helps prevent yellowing of the mouth, and can also play a role in grinding teeth and replacing deciduous teeth. However, if the dog has poor digestion ability, it can continue to eat goat milk or dog food soaked in warm water, but it is best not to eat it for a long time to avoid affecting the development of the dog's teeth.