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Animal cells uniquely possess the cell junctions called tight junctions, gap junctions, and desmosomes. [26] With few exceptions—in particular, the sponges and placozoans—animal bodies are differentiated into tissues. [27] These include muscles, which enable locomotion, and nerve tissues, which transmit signals and coordinate the body.
In the English language, many animals have different names depending on whether they are male, female, young, domesticated, or in groups. The best-known source of many English words used for collective groupings of animals is The Book of Saint Albans , an essay on hunting published in 1486 and attributed to Juliana Berners . [ 1 ]
Zoology (UK: / z u ˈ ɒ l ə dʒ i / zoo-OL-ə-jee, US: / z oʊ ˈ ɒ l ə dʒ i / zoh-OL-ə-jee) [1] is the scientific study of animals.Its studies include the structure, embryology, classification, habits, and distribution of all animals, both living and extinct, and how they interact with their ecosystems.
Reindeer, Rangifer tarandus, are familiar hoofed animals that live in cold climates near the North Pole. In many societies, children learn about reindeer from a very early age. This is true even ...
The tail is the elongated section at the rear end of a bilaterian animal's body; in general, the term refers to a distinct, flexible appendage extending backwards from the midline of the torso. In vertebrate animals that evolved to lose their tails (e.g. frogs and hominid primates), the coccyx is the homologous vestigial of the tail.
Fauna comes from the name Fauna, a Roman goddess of earth and fertility, the Roman god Faunus, and the related forest spirits called Fauns.All three words are cognates of the name of the Greek god Pan, and panis is the Modern Greek equivalent of fauna (πανίς or rather πανίδα).
While the earliest mammals were probably predators, different species have since adapted to meet their dietary requirements in a variety of ways. Some eat other animals—this is a carnivorous diet (and includes insectivorous diets). Other mammals, called herbivores, eat plants, which contain complex carbohydrates such as cellulose.
It's tough to say for sure who the first person to ever utter the words "Black Friday" might have been, but here's everything we know about its origins.