Board book.
Shadows, strangers, thunder and lightning! Sometimes Doggie gets scared. Don't worry, Doggie. Baby is here. Baby's toy Doggie is scared of many things: shadows, swimming pools, strangers, loud noises. Boom! Good thing Baby is there to help, with a trusty blankie (which sometimes works). Baby also comforts Doggie at nursery and at the playground when Mummy steps out of their sight. But when Doggie himself goes missing, could that be too scary even for brave Baby?
Preschool.