All animals need food, oxygen, shelter, and water to survive, but they are all unique in their own ways! Human beings, dogs and cats, and all the other animals on the planet have their own sets of needs, survival instincts, and contributions to the natural world. Readers explore the many creatures they share Earth with, as colorful illustrations and fascinating facts combine to make an excellent learning experience! A glossary and index can be found at the end to facilitate independent reading, and activities invite them to put their knowledge into practice.