Animals can be categorized in many different ways. Scientists and community scientists use taxonomy or the system used to sort living things. One way animals are classified is by phylum-sorting animals into categories starting with first, whether they have a backbone or no backbone.

Elementary-aged children do not need to know the scientific systems by which animals are categorized, but they do need to begin observing and identifying characteristics that place-specific animals in specific groups. For this activity, children will focus on fish, birds, and mammals.