Dogs are born with their eyes closed because they are not completely developed when they are born. When puppies are born, their eyelids are fused shut and will not open for about two weeks. This is to protect the puppy’s eyes from damage as they develop. Once a puppy’s eyes open, he or she will begin to explore the world around them. This is an important time for socialization, so it is important to introduce your puppy to new people and animals gradually.