Reading this charming storybook to your preschooler is a wonderful way to introduce them to the fact that you wanted them very much but had trouble having them. Fortunately, a "very good doctor" helped mommy and daddy fulfill their dreams.The very basic fact that it takes an egg and a sperm to make a baby is introduced, making it a perfect platform for discussing In Vitro Fertilization with your child later on--when they become more aware of "how babies are made." Kimberly Kluger-Bell is a licensed marriage and family therapist specializing in reproductive issues. She has worked for numerous fertility clinics and is the founder of Books for Donor Kids. She is the author of Unspeakable Losses (WW Norton); The Pea That Was Me series and The Very Kind Koala: A Surrogacy Story for Children.