Under 2 Children under the age of two really aren't aware of the dog as a real presence. Although they may talk to the dog and call it by name, the dog doesn't really mean any more to it than a stuffed animal. At this age the dog considers the child a potential littermate. Do's Supervision is mandatory whenever the child and dog are together. Dogs should not be trusted with an infant unsupervised, remember they can unintentionally hurt them just playing.
Playpens are a very useful tool to separate dog and infant.
Teach your dog to take food only from the palm of the left hand, so that he is not snagging food from the baby. Separate the child from the dog if play gets too rough or your dog seems ill at ease. Don'ts Don't relegate your dog to the backyard. He is a family member and deserves and needs to be with you. Time in the backyard while your child is playing around the house is fine, but when the child is napping or you are free to supervise, bring the dog in.