In an unusual photo essay, Sayre has photographed one male green frog and written short rhyming sentences recounting her observations of him in his natural pond environment. The photographs are crisp and clear, the simple text engaging, making this a great early science book to share with a toddler, or to use in a preschool story hour. The author's note about the difference between observing an individual frog (as she has done) and a scientific study of frogs is eye-opening, and may serve as a springboard for a first discussion with children about scientific methods. (Ages 2-6)