It takes 4 months for puppies to change their teeth. Dogs start changing their teeth at 3 or 4 months of age and end at 8 or 9 months of age. The time and cycle of tooth replacement can vary from dog to dog, so it is important to judge your dog according to its own situation. Dogs will feel uncomfortable when they change their teeth, so they will look for things to chew on, when the owner should prepare some teething toys or snacks for the dog to prevent the dog from destroying the furniture.
