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A mammal (from Latin mamma 'breast') [1] is a vertebrate animal of the class Mammalia (/ m ə ˈ m eɪ l i. ə /).Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three middle ear bones.
Some mammals undertake exceptional migrations; reindeer have one of the longest terrestrial migrations on the planet, reaching as much as 4,868 kilometres (3,025 mi) per year in North America. However, over the course of a year, grey wolves move the most.
The goat is a terrestrial animal.. Terrestrial animals are animals that live predominantly or entirely on land (e.g. cats, chickens, ants, most spiders), as compared with aquatic animals, which live predominantly or entirely in the water (e.g. fish, lobsters, octopuses), and semiaquatic animals, which rely on both aquatic and terrestrial habitats (e.g. platypus, most amphibians).
The species is known as klipdas in Afrikaans (etymology: rock + badger), [citation needed] while most people just call them "dassies" (the plural of dassie) or "rock rabbits" in South Africa. The Swahili names for them are pimbi , pelele , and wibari , though the latter two names are nowadays reserved for the tree hyraxes . [ 38 ]
The terrestrial species tend to be larger than the arboreal forms, and to have larger claws, which they use for digging up insect prey. They have poorly developed canine teeth and unspecialised molars, with an overall dental formula of 2.1.3.3 3.1.3.3 [9] Treeshrews have good vision, which is binocular in the case of the more arboreal species.
Other terrestrial mammalian megafauna weighing as much or more than the guanaco include the tapirs, the marsh deer, the white-tailed deer, the spectacled bear, and the jaguar. [ citation needed ] Guanacos have thick skin on their necks, a trait also found in their domestic counterparts, the llama , and their relatives, the wild vicuña and ...
Cetartiodactyla is a large order of hoofed mammals, the even-toed ungulates, and aquatic mammals, cetaceans. Cetacea was found to be nested within "Artiodactlya" and has now been moved into that order, whose name is now Cetartiodactyla. [2] Even-toed ungulates are found nearly world-wide, although no species are native to Australia or Antarctica.
Terrestrial mammals, such as the tiger and deer, are mainly hunted for their pelts and in some cases meat, and marine mammals can be hunted for their oil and leather. Specific targeting of one species can resonate through the wider ecosystem due to coextinction processes, especially if the targeted species is a keystone species.