"In her children's debut, Halliday offers a wry tribute to the infinite variety of animal rear ends ('Some are smooth/ And some are shiny/ Some are swimming in the briny'). Her couplets evince both an ease with current slang ('Ms. Elephant's got junk/ In her supplemental trunk') as well as more refined aesthetic (the mandrill's rear is 'cobalt blue,' the polar bear's backside is 'more of an ecru') ... the text just itches to be read aloud—a mock hauteur is highly recommended." — Publishers Weekly

"In this humorous glimpse at animal bottoms, a boy and his parents visit the zoo, where they observe the various inhabitants' hindquarters. Rhymed verses keep the narrative flowing as readers learn various synonyms for 'rear ends' and see their many sizes, shapes, textures, and colors, from the flamingo's 'bright azalea hue,' to the armadillo's butt that's 'harder than a bowling shoe.' Using a colorful, golden earth-toned palette, Santat renders cartoon depictions of an assortment of zoo scenes. The close-up perspective of the blue, male mandrill's face progresses to his fanny, which does not have the cobalt hue that the text states, but is fascinating and funny nonetheless. This book stacks up well against its current competition, Michael Ian Black's Chicken Cheeks (S & S, 2009). Use for vocabulary-stretching pleasure." — Blair Christolon, School Library Journal