Close Menu
    What's Hot

    How to Choose the best casino game that is suited to your skills and preferences

    August 9, 2025

    Benefit Live Roulette: Including Exhilaration and Incentives to Your Video game

    August 9, 2025

    The Ultimate Guide to Crypto Contract Trading Platform

    August 9, 2025
    Facebook X (Twitter) Instagram
    BrowninMag
    Contact Us
    • Home
    • Business
    • Health
    • Lifestyle
    • Politics
    • Sports
    • Contact Us
    BrowninMag
    • Home
    • About Us
    • Contact Us
    • Privacy Policy
    Home»Celebrity»Animals are our friends
    Celebrity

    Animals are our friends

    Zaiba SeoBy Zaiba SeoJuly 25, 2025Updated:August 6, 2025No Comments3 Mins Read
    Facebook Twitter Pinterest LinkedIn Tumblr WhatsApp VKontakte Email
    Share
    Facebook Twitter LinkedIn Pinterest Email

     

    Animals are multicellular, eukaryotic organisms comprising the biological kingdom Animalia (/ˌænɪˈmeɪliə/[4]). With few exceptions, animals consume organic material, breathe oxygen, have myocytes and are able to move, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development. Animals form a clade, meaning that they arose from a single common ancestor. Over 1.5 million living animal species have been described, of which around 1.05 million are insects, over 85,000 are molluscs, and around 65,000 are vertebrates. It has been estimated there are as many as 7.77 million animal species on Earth. Animal body lengths range from 8.5 μm (0.00033 in) to 33.6 m (110 ft). They have complex ecologies and interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology, and the study of animal behaviour is known as ethology.

    The animal kingdom is divided into five major clades, namely Porifera, Ctenophora, Placozoa, Cnidaria and Bilateria. Most living animal species belong to the clade Bilateria, a highly proliferative clade whose members have a bilaterally symmetric and significantly cephalised body plan, and the vast majority of bilaterians belong to two large clades: the protostomes, which includes organisms such as arthropods, molluscs, flatworms, annelids and nematodes; and the deuterostomes, which include echinoderms, hemichordates and chordates, the latter of which contains the vertebrates. The much smaller basal phylum Xenacoelomorpha have an uncertain position within Bilateria.

    Animals first appeared in the fossil record in the late Cryogenian period and diversified in the subsequent Ediacaran period in what is known as the Avalon explosion. Earlier evidence of animals is still controversial; the sponge-like organism Otavia has been dated back to the Tonian period at the start of the Neoproterozoic, but its identity as an animal is heavily contested.[5] Nearly all modern animal phyla first appeared in the fossil record as marine species during the Cambrian explosion, which began around 539 million years ago (Mya), and most classes during the Ordovician radiation 485.4 Mya. Common to all living animals, 6,331 groups of genes have been identified that may have arisen from a single common ancestor that lived about 650 Mya during the Cryogenian period.

    Historically, Aristotle divided animals into those with blood and those without. Carl Linnaeus created the first hierarchical biological classification for animals in 1758 with his Systema Naturae, which Jean-Baptiste Lamarck expanded into 14 phyla by 1809. In 1874, Ernst Haeckel divided the animal kingdom into the multicellular Metazoa (now synonymous with Animalia) and the Protozoa, single-celled organisms no longer considered animals. In modern times, the biological classification of animals relies on advanced techniques, such as molecular phylogenetics, which are effective at demonstrating the evolutionary relationships between taxa.

    Humans make use of many other animal species for food (including meat, eggs, and dairy products), for materials (such as leather, fur, and wool), as pets and as working animals for transportation, and services. Dogs, the first domesticated animal, have been used in hunting, in security and in warfare, as have horses, pigeons and birds of prey; while other terrestrial and aquatic animals are hunted for sports, trophies or profits. Non-human animals are also an important cultural element of human evolution, having appeared in cave arts and totems since the earliest times, and are frequently featured in mythology, religion, arts, literature, heraldry, politics, and sports.

    Share. Facebook Twitter Pinterest LinkedIn Tumblr WhatsApp Email
    Previous ArticleMeilleur Casino en ligne 2025 – Classement complet.3099
    Next Article Spil p casino uden dansk licens fra Danmark.1408
    Zaiba Seo

    Related Posts

    Benefit Live Roulette: Including Exhilaration and Incentives to Your Video game

    August 9, 2025

    How to Choose the best casino game that is suited to your skills and preferences

    August 9, 2025

    The Ultimate Guide to Crypto Contract Trading Platform

    August 9, 2025

    Discovering the Exciting World of BC Game Germany

    August 9, 2025
    Leave A Reply Cancel Reply

    Our Picks
    Don't Miss

    How to Choose the best casino game that is suited to your skills and preferences

    By Zaiba SeoAugust 9, 20250

    1

    Benefit Live Roulette: Including Exhilaration and Incentives to Your Video game

    August 9, 2025

    The Ultimate Guide to Crypto Contract Trading Platform

    August 9, 2025

    Discovering the Exciting World of BC Game Germany

    August 9, 2025
    About Us

    Your source for engaging content and insights. BrowninMag is designed to provide you with high-quality articles and stories that captivate and inform. Explore our main page for more updates and exciting content.

    We’re open to new partnerships and collaborations.

    Email Us: [email protected]

    Our Picks
    Facebook X (Twitter) Instagram Pinterest
    • Home
    • About Us
    • Contact Us
    • Privacy Policy
    © 2025 BrowninMag.

    Type above and press Enter to search. Press Esc to cancel.