Sara Levine is an author, educator an a veterinarian. Her science books for children include Bone by Bone: Comparing Animal Skeletons; Tooth by Tooth: Comparing Fangs, Tusks and Chompers; Fossil by Fossil: Comparing Dinosaur Bones, and Flower Talk: How Plants Use Color to Communicate. She has two books currently in press: Eye by Eye: Comparing Animal Peepers, and Bedtime for a Scientist.