This document summarizes key characteristics of the Kingdom Animalia. It describes how animals are multicellular, eukaryotic organisms that ingest food and digest it internally. It notes there are over 9 million identified animal species across 36 phyla, with arthropods being the largest phylum at 87% of species. The document outlines animal traits like movement, reproduction, size, habitats, cells, tissues, organs, symmetry, and evolutionary trends in body plans.