what is animals.

Animals are multicellular, eukaryotic organisms of the kingdom Animalia or Metazoa. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their life. Most animals are motile, meaning they can move spontaneously and independently.


 All animals must ingest other organisms or their products for sustenance. Most known animal phyla appeared in the fossil record as marine species during the Cambrian explosion, about 542 million years ago. Animals are divided into various sub-groups, including birds, mammals, amphib


Animal


an′im-al, n. an organised being, having life, sensation, and voluntary motion—it is distinguished from a plant, which is organised and has life, but not sensation or voluntary motion: the name sometimes implies the absence of the higher faculties peculiar to man.—adj. of or belonging to animals: sensual.—n. Animalisā′tion, the act of converting into animal substance, or of endowing with animal attributes: brutalisation.—v.t. An′imalise, to endow with animal life: to convert into animal matter:—pr.p. an′imalīsing; pa.p.an′imalīsed.

—n. An′imalism, the state of being actuated by animal appetites only: the exercise or enjoyment of animal life, as distinct from intellectual: brutishness: sensuality: (rare) a mere animal being.—adv. An′imally, physically merely.—Animal spirits, nervous force: exuberance of health and life: cheerful buoyancy of temper: (Milton) the spirit or principle of volition and sensation. [L.—anima, air, life, Gr. anemos, wind—aō, aēmi, Sans. an, to breathe, to blow.]ians, reptiles, fish and insects.