Hear Them Roar Sound Book by June Smalls & Becky ThornsHear Them Roar Sound Book by June Smalls & Becky Thorns. All around the world, animals that were once thriving are now endangered, from the black footed ferret to the kakapo. Eventually, these amazing animals could be lost. With this fully illustrated guidebook + sound pad, kids can learn about the calls, snorts, squeaks, and roars of 14 endangered animals, discover the characteristics that make them special, and see how we are helping bring them back