This document discusses different ways of classifying and grouping animals. It describes observing animals' physical attributes like wings, fins, scales, fur, and how they move by walking, flying, swimming. Animals can then be grouped by their environment - land, air or water. Further groups are formed by what covers their body - scales, feathers, fur. The final grouping looks at how they are born - from eggs or live birth. Examples are given of different animals and their characteristics.