Polar Bear, Polar Bear, What Do You Hear? by Bill Martin, Jr., with illustrations by Eric Carle, is a bit difficult to share at storytime.  We have to guess what wild animals sound like.  I know the sounds of animals on a farm, but not in the wild.  At home you can make up silly sounds or scary sounds to go with the walrus and flamingo and zebra.  Perhaps a trip to the zoo would help you guess more acurately.