STEFOFF, Rebecca . How Animals Feel . ISBN 978-1-60870-511-5 ; ISBN 978-1-60870-613-6 . LC 2010053239. STEFOFF, Rebecca . How Animals Play . ISBN 978-1-60870-512-2 ; ISBN 978-1-60870-614-3 . LC 2010053241. STEFOFF, Rebecca . How Animals Think . ISBN 978-1-60870-513-9 ; ISBN 978-1-60870-615-0 . LC 2010040550. ea vol: 80p. (Animal Behavior Revealed Series). bibliog. diag. further reading. glossary. index. photos. reprods. websites. Cavendish Square . 2013. lib. ed. $34.21; ebk. $34.21. Gr 5-8 Lively, informative scientific writing explores animal behavior in this excellent series. Engaging sentences smoothly define terms within the texts and develop concepts with logic and clarity. By describing a behavior, then examining human efforts to analyze and understand it, the author brings readers right into the world of science and inquiry, making this set a great vehicle for Common Core concepts. Numerous examples reveal commonalities and differences between species, as well as multiple research approaches used by scientists. The quality of the photographs is average, but many images effectively depict described behaviors (e.g., a baboon opening a car door and the courtship dance of two blue-footed boobies). The indexes are limited; animals such as kangaroos and elephants are not included, but specific creatures such as Koko the Gorilla and broader categories like birds and primates are. Despite this minor flaw, the set is a strong example of high-quality nonfiction.