Main Article About Animal Species
People often have a very general idea of what animal skin looks like. They may have seen it on TV or in a magazine, but not really thought much about it beyond the fact that it’s covered in hair and is sometimes gross and uncomfortable. But the fact is, there’s much more to animal skin than meets the eye. Animal skin is actually a multicellular, multiregular organism in the Kingdom Animalia. With few exceptions, all animals breathe air, digest organic matter, can move, can breed sexually, and have individual, unique characteristics unique to their kind.
One of the most important categories of organisms in the Kingdom Animalia is the Phylum Arthropoda, also known as the hairs or fur of an animal. There are two basic classifications of arthropods: land and marine. The most common arthropod species are covered with hair, although a few small specialized species don’t have any hair at all. About 500 distinct types of arthropods have been identified in modern cosmopolitan areas. Two of the largest animal species are the elephant and the walnut, although hippos and whales are also arthropods classified in this family.
A multicellular organism, arthropods are characterized by a primary anatomy made up of a hard exoskeleton and a soft stomach containing gills. The external skeleton (the body) is composed mainly of keratin, which is a complex protein made up of several amino acids. The nervous system, including a brain and a few special senses, is covered with an arachnoid exoskeleton.
A variety of animals include all land mammals including mammals, amphibians, reptiles, mollusks, crustaceans, fish, birds, and some unicellular forms such as algae. The class of animals that fall into the Phylum Chordata is simply the term for “round”. Earthworms, millipedes, aphids, and some arachnids are examples of classifications of terrestrial animals. Insects belong to the Class Insecta, while crustaceans, cephalopods, snails, slugs, and some forms of shrimp are classified in the Class Homematium. All arboreal forms belong to the Class Terrestrial.
There are two broad categories of mammals: placental mammals and marsupials. Placental mammals, such as humans and other primates, are placental, meaning they have a living child under the usual development process. marsupials, on the other hand, are marsupials that are related to rodents and hoppails are prime examples. Some dinosaurs are suspected of being marsupials, such as the iguanodon. marsupials differ from placental mammals in that they give birth, feed, help rear the young, and live both in water and on land. Most animals in this group have four digits on each foot, except for mice, which have only three.
This is the main article about animal species. If you would like to read more about specific animals and their characteristics, check out our other main articles. This article is only for informative purposes. We do not encourage you to hunt or kill any of the animals mentioned in this article. You are advised to learn how to protect yourself against animal attacks.