Derek Miller 
Mouths, Teeth, and Tongues [PDF ebook] 

Through exciting photographs and carefully tailored vocabulary, this book introduces young readers to the ways animals eat, drink, taste, and make sounds. Beginning readers will explore the functions of mouths, teeth, and tongues across species, learning the ways these body parts help animals to survive. This book demonstrates how these structures have evolved to best serve the specific diets and habitats of different animals.