This template is a comprehensive mind - map on animal classification. Starting with "Animals", it first lists general features such as multicellular, eukaryotic, motile, heterotrophic, and various symmetry and body - cavity types. Under "Animal Classification", it branches into three major phyla: Mollusca, Annelida, and Arthropoda. Phylum Mollusca includes Class Gastropoda, known for features like a distinct head and torsion. Phylum Annelida has classes Oligochaeta and Polychaeta, differing in bristle characteristics and head development. Phylum Arthropoda is further divided into classes Crustacea, Arachnida, and Insecta, each with specific traits like the number of tagmata, legs, and types of metamorphosis. This visual aid helps in understanding the hierarchical and characteristic - based classification in zoology.