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Animals are grouped into two categories: vertebrates, which have a vertebral column or backbone, and include animals like camels, crocodiles, ducks, elephants, giraffes, frogs, lions, rats, snakes, and turtles. The second group is invertebrates, which do not have a backbone and includes animals such as bees, ants, cockroaches, house flies, prawns, jellyfish, crabs, butterflies, octopuses, snails, worms, and starfish.Read less