We have no way of knowing how your dog will perceive the “fake” baby and dogs are extremely intelligent creatures. If for months you are preparing your dog with a “fake” baby and then your newborn arrives that moves, makes noise, and has a new smell it could actually draw more suspicion and curiosity to your dog. We also never want our dog to think the newborn baby is a toy. I have seen many families prepare the dog with this “fake” baby only to leave it laying around on the counter!