Domestic Dogs are a specific group of terrestrial mammals that belong to the Canidae family. They are a subspecies of wolves and are primarily kept as pets or working animals by humans. Known for their loyalty and companionship, these animals are characterized by their diverse range of breeds, sizes, and behaviors. Domestic Dogs fall under the larger category of Domestic Animals, which includes all species of animals that are kept by humans for various purposes including companionship, work, or production of food and fiber. The broader group they belong to is Animals, encompassing all living organisms in the animal kingdom distinguished by their capacity for locomotion, non-photosynthetic food source, and complex sensory and nervous systems.