[onscreen action] Two puppies playing with a single, rabbit-shaped dog toy. [narrator] The most critical time for puppies to be exposed to social situations is during the first three to four months of their lives. [onscreen action] Man sets puppy on floor of living room, young girl gets off couch and pets puppy. [narrator] During this time, puppies should be introduced to as many new people and safe environments as possible. [onscreen action] Man outside lets puppy sniff around various plants. [narrator] Doing this will decrease the risk of your puppy developing behavior problems later in life, including fear, avoidance, and even aggression. [onscreen action] Man and young girl in living room play use rabbit-shaped dog to to play with puppy. [narrator] Now, a great way to get started socializing your puppy is to enroll in puppy classes! [onscreen action] Group of four people with their puppies in a room. [narrator] Puppy classes will provide your dog with important life lessons and training, plus exposure to other puppies and people. [onscreen action] Closeup of people training their puppies to sit. [narrator] Your dog will learn how to interact with other people and dogs in a safe environment that promotes fun and learning. [onscreen action] Two puppies sniffing each other. [narrator] Also, ask your friends if you can bring your puppy over to their house from time to time. [onscreen action] Man sets puppy on couch next to second man. Both men pet the puppy. [narrator] Having your puppy meet all kinds of people in different environments will be great for his social development. [onscreen action] Man in livingroom sitting on floor, playing with puppy. [narrator] Try to include as much variety as possible, such as men, children, seniors, teenagers, as well as people with hats, sunglasses, coats, those on bikes, rollerblades, and more. [onscreen action] Family with young children sitting in livingroom, playing with a puppy. [narrator] Most everyone loves to pet and play with puppies, so use this to your advantage. You can even ask friends to hand-feed your dog some of his daily meal. However, if your puppy's fearful, don't force him. [onscreen action] Montage of people hand-feeding a puppy. [narrator] Instead, give him some space, but continue to offer him treats just for hanging out. [onscreen action] Group of four people and their puppies in a room. Puppies are all playing with each other. [narrator] Remember, even after three months of age, continue introducing your dog to as many new people, places, and learning experiences as you can to help you achieve a social pup you'll be proud of. [onscreen action] Puppy casually sitting on floor.