Hippos and rhinos are both big and gray. So which is which? The hippo spends most of its time in the water and has no horns. The rhino likes dry land and has one or two horns. Animals are cleverly paired in this fresh take on the concept book. While many animal duos have similarities and are often mistaken for each another, the two books in this series explain their main differences in spare, accessible text for the youngest of nonfiction readers. Animal pairs included in Big Beasts are: tiger/lion, hippo/rhino, baboon/mandrill, dolphin/porpoise, kangaroo/wallaby, crow/raven, turtle/tortoise, octopus/squid. Animal pairs included in Creatures are: lobster/crab, zebra/gnu, alligator/crocodile, gorilla/chimpanzee, cheetah/leopard, dromedary/bactrain, gerbil/hamster, frog/toad. These inventive concept books describe the differences between often-confused pairs of animals and feature bold illustrations, accessible text, and innovative double fold-outs.