Animal

the health and well being of An animal or organism other than a human, especially a mammal.Animal health link. member of the animal kingdom , as distinguished from organisms of the plant kingdom and the kingdoms Fungi, Protista, and Monera in the five-kingdom system of classification. Another classification system, suggested by genetic sequencing studies, places animals with plants and some other forms in a larger taxonomic unit called the eukarya to distinguish them from the prokaryotic bacteria and archaea, or ancient bacteria. Essentially, animals are many-celled heterotrophic organisms. Plants and algae characteristically manufacture their food from inorganic substances animals must secure food already organized into organic substances. They are dependent upon photosynthetic organisms, which provide oxygen as a byproduct and are the ultimate source of all their food.