The basic mammalian body type is quadruped, and most mammals use their four extremities for terrestrial locomotion; but in some, the extremities are adapted for life at sea, in the air, in trees, underground, or on two legs. Mammals range in size from the 30–40 mm (1.2–1.6 in) bumblebee bat to the 30 m (98 ft) blue whale—possibly the largest animal to have ever lived. Maximum lifespan varies from two years for the shrew to 211 years for the bowhead whale. All modern mammals give birth to live young, except the five species of monotremes, which are egg-laying mammals. The most species-rich group of mammals, the infraclass called placentals, have a placenta, which enables the feeding of the fetus during gestation.
Domestication of many types of mammals by humans played a major role in the Neolithic Revolution, and resulted in farming replacing hunting and gathering as the primary source of food for humans. This led to a major restructuring of human societies from nomadic to sedentary, with more co-operation among larger and larger groups, and ultimately the development of the first civilizations. Domesticated mammals provided, and continue to provide, power for transport and agriculture, as well as food (meat and dairy products), fur, and leather. Mammals are also hunted and raced for sport, kept as pets and working animals of various types, and are used as model organisms in science. Mammals have been depicted in art since Paleolithic times, and appear in literature, film, mythology, and religion. Decline in numbers and extinction of many mammals is primarily driven by human poaching and habitat destruction, primarily deforestation. (Full article...)
The Herdwick is a traditional breed of domestic sheep native to the mountainous Lake District of Cumbria in North West England. The name "Herdwick" is derived from the Old Norseherdvyck, meaning sheep pasture. Though low in lambing capacity and wool quality when compared to more common commercial breeds such as Merino sheep, Herdwicks are prized for their robust health, their ability to live solely on forage, and their tendency not to stray over the difficult upland terrain of the Lake District. An integral part of the cultural identity of the Lake District, the breed is for the most part found in the central and western dales of the region. Severely threatened by the 2001 outbreak of foot-and-mouth disease in England and Wales, the breed has survived due to the intent to preserve this unique animal as a crucial part of traditional Lakeland agriculture. Still far less in number than most commercial breeds, Herdwicks survive largely due to farming subsidies and the aid of the British National Trust for Places of Historic Interest or Natural Beauty.
...from its discovery by John Edward Gray in 1850 until a re-assessment in 1981, the Clymene Dolphin was regarded as sub-species of the Spinner Dolphin.
...the Australian Snubfin Dolphin (Orcaella heinsohni) is a recently recognised species of dolphin first described in 2005.
The common wombat (Vombatus ursinus) is one of three species of wombat. It is native to south-eastern mainland Australia and Tasmania, and grows to an average of 98 cm (39 in) long and a weight of 26 kg (57 lb). It is solitary and lives in an underground burrow.
A female African bush elephant (Loxodonta africana) in Mikumi National Park, Tanzania. These herbivorous mammals are the largest land animals on Earth; males average 3.3 metres (11 ft) tall at the shoulders and 5.5 tonnes (12,000 lb) in weight, whereas females average 2.8 metres (9.2 ft) in height and 3.7 tonnes (8,200 lb) in weight. Owing to their great size, adult African bush elephants have no natural predators except for humans. Calves, however, are preyed on by lions and crocodiles.
Skull of a male North Sulawesi babirusa, a species from the pig family endemic to Indonesia. Babirusas are notable for the long upper canines in the males that emerge vertically from the alveolar process, penetrating though the skin and curving backward over the front of the face and towards the forehead.
Male lion (Panthera leo) and cub eating a Cape buffalo in Northern Sabi Sand, South Africa. Lions are true predators who can require an average of up to seven kilograms (15 lbs) of meat daily to survive. Large mammals comprise an important part of a lion's diet.
The meerkat (Suricata suricatta) is a small member of the mongoose family native to the Kalahari Desert of southern Africa. They are social animals, living underground in groups of 20 to 50 members. Although the name means "lake cat" in Dutch, meerkats are not cats, nor are they attracted to lakes.
The roan antelope (Hippotragus equinus) is a species of savanna antelope found in western, central and southern Africa. Named for its reddish-brown coat, it has a black face with white patches around the eyes and the mouth, and a short erect mane of greyish brown hair extending from the back of the neck to the rump. This roan antelope, of the subspeciesH. e. koba, was photographed in Senegal; the subspecies's range extends from Senegal to Benin in western Africa.
The Golden-mantled Ground Squirrel (Spermophilus lateralis) is a species of squirrel native throughout North America and can be found in a wide variety of forest habitats as well as rocky meadows, and even sagebrush flats. It can be identified by its chipmunk-like stripes and coloration, but unlike chipmunks, it lacks any facial stripes.
Zootomical terms of location overlap considerably with terms used in human anatomy. In animals, the head end is called the "cranial end" and the tail end is the "caudal end". The side of the body normally oriented upwards is the "dorsal" side; the opposite side, typically the one closest to the ground when walking on all legs, swimming or flying, is the "ventral" side.
The greater kudu (Tragelaphus strepsiceros) is a species of woodland antelope in the genus Tragelaphus found throughout eastern and southern Africa. Despite occupying widespread territory, they are sparsely populated in most areas due to declining habitat, deforestation and poaching. The greater kudu is one of two species commonly known as kudu, the other being the lesser kudu, T. imberbis. Greater kudus have a narrow body with long legs, and their coats can range from brown or bluish grey to reddish brown. They possess between four and twelve vertical white stripes along their torso. The head tends to be darker in colour than the rest of the body, and exhibits a small white chevron running between the eyes. The helical horns of adult males grow as the animal ages, reaching '"`UNIQ--templatestyles-0000000D-QINU`"' 21⁄2 rotations at about 6 years old.
This picture shows a greater kudu bull photographed near Groot Okevi in Etosha National Park, Namibia. Bulls weigh 190–270 kg (420–600 lb), up to a maximum of 315 kg (690 lb), and stand up to 160 cm (63 in) tall at the shoulder.
A female koala (Phascolarctos cinereus) with her joey clinging to her back. At birth the joey is hairless, blind, and earless, and only about 20 mm (0.79 in) long. It remains hidden in the pouch for about six months, feeding only on milk. During this time it will grow ears, eyes, and fur. The joey will remain with its mother for another six months or so, riding on her back, and feeding on both milk and eucalypt leaves until weaning is complete at about 12 months of age.
A female Parma Wallaby (Macropus parma) and her joey. This wallaby species is the smallest member of the genus Macropus, at between 3.2 and 5.8 kilograms (7.1 and 12.8 lb) and about 50 centimetres (1.6 ft) in length. It was believed to be extinct before the end of the 19th century, but a population was found on Kawau Island in 1965, and two years later another population was found in the forests near Gosford, New South Wales. They are now classified as Near Threatened.
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