User blog:Robergestudios/On animal classifications and categories

Because a lot of people here seem to be confused about how to classify animals in appropriate categories, I've decided to create this small blog post to help clear the confusion. I'll only be listing the most relevant subgroups here:

Kingdom: Animalia
 * Phylum: Porifera (sea sponges)
 * Phylum: Cnidaria (jellyfishes, sea anemones and corals)
 * Phylum: Nematoda (roundworms)
 * Phylum: Plathelminthe (flatworms)
 * Phylum: Annelida (earthworms, tube worms and leeches)
 * Phylum: Mollusca (octopuses, snails and clams)
 * Phylum: Arthropoda (animals with segmented bodies)
 * Class: Insecta (ants, grasshoppers, beetles, butterflies, etc)
 * Class: Arachnida (spiders, scorpions and mites)
 * Class: Crustacea (crabs, lobsters, shrimps and prawns)
 * Class: Myriapoda (centipedes and millipedes)
 * Phylum: Echinodermata (starfishes, sea urchins and sea cucumbers)
 * Phylum: Chordata (animals with a dorsal nerve cord), Subphylum: Vertebrata (animals with a backspine)
 * Class: Chondrichtyhe (sharks and rays)
 * Class: Osteichtyhe (regular fish)
 * Class: Amphibia (frogs, toads, salamanders and newts)
 * Class: Reptilia (lizards, snakes, turtles, and crocodiles)
 * Class: Aves (birds in general)
 * Class: Mammalia (mammals)
 * Order: Erinaceidae (hedgehogs)
 * Order: Monotremata (echidnas and platypuses)
 * Infraclass: Marsupialia (kangaroos, bandicoots, koalas and opossums)
 * Infraclass: Placentaria (mammals with wombs)
 * Order: Cingulata (armadillos)
 * Order: Pilosa (anteaters and sloths)
 * Order: Sirenia (manatees and dugongs)
 * Order: Cetacea (whales and dolphins)
 * Order: Proboscidea (elephants and mammoths)
 * Order: Lagomorpha (rabbits, hares and pikas)
 * Order: Rodentia (mice, squirrels and beavers)
 * Order: Chiroptera (bats)
 * Order: Artiodactyla (cows, pigs, goats, camels, hippos and deers)
 * Order: Perissodactyla (horses, rhinos and tapirs)
 * Order: Carnivora (cats, dogs, bears, weasels, walruses, seals, etc)
 * Order: Primata (monkeys, apes and humans)