A study of comparative physiology that explains the ways in which specific bodily systems function in different species.

"Learn how animals can be trained to assist people with a variety of different jobs."--

Animals herd, carry, pull, and even . . . keep us company! This nonfiction, easy-to-read picture book transports readers from an open field to a desert to a sno

The alarm calls of birds make them difficult for predators to locate, while the howl of wolves and the croak of bullfrogs are designed to carry across long dist

This non-fiction children’s book explains how animals work together to survive and thrive in the wild. It teaches children how important teamwork is, no matte