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.