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Animal classification, also known as taxonomy, is a hierarchical system that organizes living creatures based on their shared characteristics and evolutionary relationships. At the broadest level, animals are divided into two main groups: vertebrates, with a backbone, and invertebrates, lacking one. Vertebrates include mammals, birds, reptiles, amphibians, and fish, while invertebrates encompass a vast array of animals, such as insects, mollusks, and arachnids. Further classification involves gr...