Max and Zoe are schoolmates looking for a really cool science fair project.  Max comes up with an idea that includes his love of dogs.  He decides  to do tests on his own dog, Buddy, plus neighbor dogs, to prove that dogs understand facial expressions.  They used staring, frowning and  smiling…recording each dog’s reponse.  The dogs acted very differently to a frown vs a smile, proving his hypothesis.  What a delightful Early Reader…perfect for those late first and second grade readers.  Characters show persistence,  collaboration, and cooperation.  The book is brightly illustrated in primary colors and  sweet cartoon-like drawings.  Large print text  shares the page equally with the fun illustrations.  Back Matter includes author/illustrator information, Glossary, three Discussion Questions, Writing Prompts, and a recipe for Dog Treats.