When a Bichon Frize bites, it needs to be stopped in time, so that the Bichon Frize understands that this is wrong, and corresponding training is required when raising a Bichon Frize. For example, if you find that a Bichon Frize is trying to pounce on someone when you are out, you should tighten the leash immediately. If it stops in time, reward it. In this way, repeated training can gradually correct it. If it bites its owner, it is best if the owner shows pain immediately after the Bichon bites and yells to stop it, so that it will know that this is wrong and it will slowly correct itself.